1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"> 2 <HTML 3 ><HEAD 4 ><TITLE 5 >Extended Controls</TITLE 6 ><META 7 NAME="GENERATOR" 8 CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK 9 REL="HOME" 10 TITLE="Video for Linux Two API Specification" 11 HREF="book1.htm"><LINK 12 REL="UP" 13 TITLE="Common API Elements" 14 HREF="c174.htm"><LINK 15 REL="PREVIOUS" 16 TITLE="User Controls" 17 HREF="x542.htm"><LINK 18 REL="NEXT" 19 TITLE="Data Formats" 20 HREF="x1859.htm"></HEAD 21 ><BODY 22 CLASS="SECTION" 23 BGCOLOR="#FFFFFF" 24 TEXT="#000000" 25 LINK="#0000FF" 26 VLINK="#840084" 27 ALINK="#0000FF" 28 ><DIV 29 CLASS="NAVHEADER" 30 ><TABLE 31 SUMMARY="Header navigation table" 32 WIDTH="100%" 33 BORDER="0" 34 CELLPADDING="0" 35 CELLSPACING="0" 36 ><TR 37 ><TH 38 COLSPAN="3" 39 ALIGN="center" 40 >Video for Linux Two API Specification: Revision 0.24</TH 41 ></TR 42 ><TR 43 ><TD 44 WIDTH="10%" 45 ALIGN="left" 46 VALIGN="bottom" 47 ><A 48 HREF="x542.htm" 49 ACCESSKEY="P" 50 >Prev</A 51 ></TD 52 ><TD 53 WIDTH="80%" 54 ALIGN="center" 55 VALIGN="bottom" 56 >Chapter 1. Common API Elements</TD 57 ><TD 58 WIDTH="10%" 59 ALIGN="right" 60 VALIGN="bottom" 61 ><A 62 HREF="x1859.htm" 63 ACCESSKEY="N" 64 >Next</A 65 ></TD 66 ></TR 67 ></TABLE 68 ><HR 69 ALIGN="LEFT" 70 WIDTH="100%"></DIV 71 ><DIV 72 CLASS="SECTION" 73 ><H1 74 CLASS="SECTION" 75 ><A 76 NAME="EXTENDED-CONTROLS" 77 >1.9. Extended Controls</A 78 ></H1 79 ><DIV 80 CLASS="SECTION" 81 ><H2 82 CLASS="SECTION" 83 ><A 84 NAME="AEN804" 85 >1.9.1. Introduction</A 86 ></H2 87 ><P 88 >The control mechanism as originally designed was meant 89 to be used for user settings (brightness, saturation, etc). However, 90 it turned out to be a very useful model for implementing more 91 complicated driver APIs where each driver implements only a subset of 92 a larger API.</P 93 ><P 94 >The MPEG encoding API was the driving force behind 95 designing and implementing this extended control mechanism: the MPEG 96 standard is quite large and the currently supported hardware MPEG 97 encoders each only implement a subset of this standard. Further more, 98 many parameters relating to how the video is encoded into an MPEG 99 stream are specific to the MPEG encoding chip since the MPEG standard 100 only defines the format of the resulting MPEG stream, not how the 101 video is actually encoded into that format.</P 102 ><P 103 >Unfortunately, the original control API lacked some 104 features needed for these new uses and so it was extended into the 105 (not terribly originally named) extended control API.</P 106 ></DIV 107 ><DIV 108 CLASS="SECTION" 109 ><H2 110 CLASS="SECTION" 111 ><A 112 NAME="AEN809" 113 >1.9.2. The Extended Control API</A 114 ></H2 115 ><P 116 >Three new ioctls are available: <A 117 HREF="r10386.htm" 118 ><CODE 119 CLASS="CONSTANT" 120 >VIDIOC_G_EXT_CTRLS</CODE 121 ></A 122 >, 123 <A 124 HREF="r10386.htm" 125 ><CODE 126 CLASS="CONSTANT" 127 >VIDIOC_S_EXT_CTRLS</CODE 128 ></A 129 > and <A 130 HREF="r10386.htm" 131 ><CODE 132 CLASS="CONSTANT" 133 >VIDIOC_TRY_EXT_CTRLS</CODE 134 ></A 135 >. These ioctls act on 136 arrays of controls (as opposed to the <A 137 HREF="r10104.htm" 138 ><CODE 139 CLASS="CONSTANT" 140 >VIDIOC_G_CTRL</CODE 141 ></A 142 > and 143 <A 144 HREF="r10104.htm" 145 ><CODE 146 CLASS="CONSTANT" 147 >VIDIOC_S_CTRL</CODE 148 ></A 149 > ioctls that act on a single control). This is needed 150 since it is often required to atomically change several controls at 151 once.</P 152 ><P 153 >Each of the new ioctls expects a pointer to a 154 struct <A 155 HREF="r10386.htm#V4L2-EXT-CONTROLS" 156 >v4l2_ext_controls</A 157 >. This structure contains a pointer to the control 158 array, a count of the number of controls in that array and a control 159 class. Control classes are used to group similar controls into a 160 single class. For example, control class 161 <CODE 162 CLASS="CONSTANT" 163 >V4L2_CTRL_CLASS_USER</CODE 164 > contains all user controls 165 (i. e. all controls that can also be set using the old 166 <CODE 167 CLASS="CONSTANT" 168 >VIDIOC_S_CTRL</CODE 169 > ioctl). Control class 170 <CODE 171 CLASS="CONSTANT" 172 >V4L2_CTRL_CLASS_MPEG</CODE 173 > contains all controls 174 relating to MPEG encoding, etc.</P 175 ><P 176 >All controls in the control array must belong to the 177 specified control class. An error is returned if this is not the 178 case.</P 179 ><P 180 >It is also possible to use an empty control array (count 181 == 0) to check whether the specified control class is 182 supported.</P 183 ><P 184 >The control array is a struct <A 185 HREF="r10386.htm#V4L2-EXT-CONTROL" 186 >v4l2_ext_control</A 187 > array. The 188 <CODE 189 CLASS="STRUCTNAME" 190 >v4l2_ext_control</CODE 191 > structure is very similar to 192 struct <A 193 HREF="r10104.htm#V4L2-CONTROL" 194 >v4l2_control</A 195 >, except for the fact that it also allows for 64-bit 196 values and pointers to be passed (although the latter is not yet used 197 anywhere).</P 198 ><P 199 >It is important to realize that due to the flexibility of 200 controls it is necessary to check whether the control you want to set 201 actually is supported in the driver and what the valid range of values 202 is. So use the <A 203 HREF="r13317.htm" 204 ><CODE 205 CLASS="CONSTANT" 206 >VIDIOC_QUERYCTRL</CODE 207 ></A 208 > and <A 209 HREF="r13317.htm" 210 ><CODE 211 CLASS="CONSTANT" 212 >VIDIOC_QUERYMENU</CODE 213 ></A 214 > ioctls to 215 check this. Also note that it is possible that some of the menu 216 indices in a control of type <CODE 217 CLASS="CONSTANT" 218 >V4L2_CTRL_TYPE_MENU</CODE 219 > 220 may not be supported (<CODE 221 CLASS="CONSTANT" 222 >VIDIOC_QUERYMENU</CODE 223 > will 224 return an error). A good example is the list of supported MPEG audio 225 bitrates. Some drivers only support one or two bitrates, others 226 support a wider range.</P 227 ></DIV 228 ><DIV 229 CLASS="SECTION" 230 ><H2 231 CLASS="SECTION" 232 ><A 233 NAME="AEN840" 234 >1.9.3. Enumerating Extended Controls</A 235 ></H2 236 ><P 237 >The recommended way to enumerate over the extended 238 controls is by using <A 239 HREF="r13317.htm" 240 ><CODE 241 CLASS="CONSTANT" 242 >VIDIOC_QUERYCTRL</CODE 243 ></A 244 > in combination with the 245 <CODE 246 CLASS="CONSTANT" 247 >V4L2_CTRL_FLAG_NEXT_CTRL</CODE 248 > flag:</P 249 ><DIV 250 CLASS="INFORMALEXAMPLE" 251 ><P 252 ></P 253 ><A 254 NAME="AEN846" 255 ></A 256 ><PRE 257 CLASS="PROGRAMLISTING" 258 >struct <A 259 HREF="r13317.htm#V4L2-QUERYCTRL" 260 >v4l2_queryctrl</A 261 > qctrl; 262 263 qctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL; 264 while (0 == ioctl (fd, <A 265 HREF="r13317.htm" 266 ><CODE 267 CLASS="CONSTANT" 268 >VIDIOC_QUERYCTRL</CODE 269 ></A 270 >, &qctrl)) { 271 /* ... */ 272 qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL; 273 }</PRE 274 ><P 275 ></P 276 ></DIV 277 ><P 278 >The initial control ID is set to 0 ORed with the 279 <CODE 280 CLASS="CONSTANT" 281 >V4L2_CTRL_FLAG_NEXT_CTRL</CODE 282 > flag. The 283 <CODE 284 CLASS="CONSTANT" 285 >VIDIOC_QUERYCTRL</CODE 286 > ioctl will return the first 287 control with a higher ID than the specified one. When no such controls 288 are found an error is returned.</P 289 ><P 290 >If you want to get all controls within a specific control 291 class, then you can set the initial 292 <CODE 293 CLASS="STRUCTFIELD" 294 >qctrl.id</CODE 295 > value to the control class and add 296 an extra check to break out of the loop when a control of another 297 control class is found:</P 298 ><DIV 299 CLASS="INFORMALEXAMPLE" 300 ><P 301 ></P 302 ><A 303 NAME="AEN856" 304 ></A 305 ><PRE 306 CLASS="PROGRAMLISTING" 307 >qctrl.id = V4L2_CTRL_CLASS_MPEG | V4L2_CTRL_FLAG_NEXT_CTRL; 308 while (0 == ioctl (fd, <A 309 HREF="r13317.htm" 310 ><CODE 311 CLASS="CONSTANT" 312 >VIDIOC_QUERYCTRL</CODE 313 ></A 314 >, &qctrl)) { 315 if (V4L2_CTRL_ID2CLASS (qctrl.id) != V4L2_CTRL_CLASS_MPEG) 316 break; 317 /* ... */ 318 qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL; 319 }</PRE 320 ><P 321 ></P 322 ></DIV 323 ><P 324 >The 32-bit <CODE 325 CLASS="STRUCTFIELD" 326 >qctrl.id</CODE 327 > value is 328 subdivided into three bit ranges: the top 4 bits are reserved for 329 flags (e. g. <CODE 330 CLASS="CONSTANT" 331 >V4L2_CTRL_FLAG_NEXT_CTRL</CODE 332 >) and are not 333 actually part of the ID. The remaining 28 bits form the control ID, of 334 which the most significant 12 bits define the control class and the 335 least significant 16 bits identify the control within the control 336 class. It is guaranteed that these last 16 bits are always non-zero 337 for controls. The range of 0x1000 and up are reserved for 338 driver-specific controls. The macro 339 <CODE 340 CLASS="CONSTANT" 341 >V4L2_CTRL_ID2CLASS(id)</CODE 342 > returns the control class 343 ID based on a control ID.</P 344 ><P 345 >If the driver does not support extended controls, then 346 <CODE 347 CLASS="CONSTANT" 348 >VIDIOC_QUERYCTRL</CODE 349 > will fail when used in 350 combination with <CODE 351 CLASS="CONSTANT" 352 >V4L2_CTRL_FLAG_NEXT_CTRL</CODE 353 >. In 354 that case the old method of enumerating control should be used (see 355 1.8). But if it is supported, then it is guaranteed to enumerate over 356 all controls, including driver-private controls.</P 357 ></DIV 358 ><DIV 359 CLASS="SECTION" 360 ><H2 361 CLASS="SECTION" 362 ><A 363 NAME="AEN867" 364 >1.9.4. Creating Control Panels</A 365 ></H2 366 ><P 367 >It is possible to create control panels for a graphical 368 user interface where the user can select the various controls. 369 Basically you will have to iterate over all controls using the method 370 described above. Each control class starts with a control of type 371 <CODE 372 CLASS="CONSTANT" 373 >V4L2_CTRL_TYPE_CTRL_CLASS</CODE 374 >. 375 <CODE 376 CLASS="CONSTANT" 377 >VIDIOC_QUERYCTRL</CODE 378 > will return the name of this 379 control class which can be used as the title of a tab page within a 380 control panel.</P 381 ><P 382 >The flags field of struct <A 383 HREF="r13317.htm#V4L2-QUERYCTRL" 384 >v4l2_queryctrl</A 385 > also contains hints on 386 the behavior of the control. See the <A 387 HREF="r13317.htm" 388 ><CODE 389 CLASS="CONSTANT" 390 >VIDIOC_QUERYCTRL</CODE 391 ></A 392 > documentation 393 for more details.</P 394 ></DIV 395 ><DIV 396 CLASS="SECTION" 397 ><H2 398 CLASS="SECTION" 399 ><A 400 NAME="MPEG-CONTROLS" 401 >1.9.5. MPEG Control Reference</A 402 ></H2 403 ><P 404 >Below all controls within the MPEG control class are 405 described. First the generic controls, then controls specific for 406 certain hardware.</P 407 ><DIV 408 CLASS="SECTION" 409 ><H3 410 CLASS="SECTION" 411 ><A 412 NAME="AEN879" 413 >1.9.5.1. Generic MPEG Controls</A 414 ></H3 415 ><DIV 416 CLASS="TABLE" 417 ><A 418 NAME="MPEG-CONTROL-ID" 419 ></A 420 ><P 421 ><B 422 >Table 1-2. MPEG Control IDs</B 423 ></P 424 ><TABLE 425 BORDER="0" 426 FRAME="void" 427 WIDTH="100%" 428 CLASS="CALSTABLE" 429 ><COL 430 WIDTH="7%" 431 TITLE="C1"><COL 432 WIDTH="40%" 433 TITLE="C2"><COL 434 WIDTH="13%" 435 TITLE="C3"><COL 436 WIDTH="40%" 437 TITLE="C4"><THEAD 438 ><TR 439 ><TH 440 COLSPAN="2" 441 ALIGN="LEFT" 442 >ID</TH 443 ><TH 444 ALIGN="LEFT" 445 >Type</TH 446 ><TD 447 > </TD 448 ></TR 449 ><TR 450 ><TH 451 > </TH 452 ><TH 453 COLSPAN="3" 454 ALIGN="LEFT" 455 >Description</TH 456 ></TR 457 ></THEAD 458 ><TBODY 459 VALIGN="TOP" 460 ><TR 461 ><TD 462 > </TD 463 ><TD 464 > </TD 465 ><TD 466 > </TD 467 ><TD 468 > </TD 469 ></TR 470 ><TR 471 ><TD 472 COLSPAN="2" 473 ><CODE 474 CLASS="CONSTANT" 475 >V4L2_CID_MPEG_CLASS</CODE 476 > </TD 477 ><TD 478 >class</TD 479 ><TD 480 > </TD 481 ></TR 482 ><TR 483 ><TD 484 > </TD 485 ><TD 486 COLSPAN="3" 487 >The MPEG class 488 descriptor. Calling <A 489 HREF="r13317.htm" 490 ><CODE 491 CLASS="CONSTANT" 492 >VIDIOC_QUERYCTRL</CODE 493 ></A 494 > for this control will return a 495 description of this control class. This description can be used as the 496 caption of a Tab page in a GUI, for example.</TD 497 ></TR 498 ><TR 499 ><TD 500 > </TD 501 ><TD 502 > </TD 503 ><TD 504 > </TD 505 ><TD 506 > </TD 507 ></TR 508 ><TR 509 ><TD 510 COLSPAN="2" 511 ><CODE 512 CLASS="CONSTANT" 513 >V4L2_CID_MPEG_STREAM_TYPE</CODE 514 > </TD 515 ><TD 516 >enum</TD 517 ><TD 518 > </TD 519 ></TR 520 ><TR 521 ><TD 522 > </TD 523 ><TD 524 COLSPAN="3" 525 >The MPEG-1, -2 or -4 526 output stream type. One cannot assume anything here. Each hardware 527 MPEG encoder tends to support different subsets of the available MPEG 528 stream types. The currently defined stream types are:</TD 529 ></TR 530 ><TR 531 ><TD 532 > </TD 533 ><TD 534 COLSPAN="3" 535 ><TABLE 536 BORDER="0" 537 CLASS="CALSTABLE" 538 ><COL><COL><TBODY 539 VALIGN="TOP" 540 ><TR 541 ><TD 542 ><CODE 543 CLASS="CONSTANT" 544 >V4L2_MPEG_STREAM_TYPE_MPEG2_PS</CODE 545 > </TD 546 ><TD 547 >MPEG-2 program stream</TD 548 ></TR 549 ><TR 550 ><TD 551 ><CODE 552 CLASS="CONSTANT" 553 >V4L2_MPEG_STREAM_TYPE_MPEG2_TS</CODE 554 > </TD 555 ><TD 556 >MPEG-2 transport stream</TD 557 ></TR 558 ><TR 559 ><TD 560 ><CODE 561 CLASS="CONSTANT" 562 >V4L2_MPEG_STREAM_TYPE_MPEG1_SS</CODE 563 > </TD 564 ><TD 565 >MPEG-1 system stream</TD 566 ></TR 567 ><TR 568 ><TD 569 ><CODE 570 CLASS="CONSTANT" 571 >V4L2_MPEG_STREAM_TYPE_MPEG2_DVD</CODE 572 > </TD 573 ><TD 574 >MPEG-2 DVD-compatible stream</TD 575 ></TR 576 ><TR 577 ><TD 578 ><CODE 579 CLASS="CONSTANT" 580 >V4L2_MPEG_STREAM_TYPE_MPEG1_VCD</CODE 581 > </TD 582 ><TD 583 >MPEG-1 VCD-compatible stream</TD 584 ></TR 585 ><TR 586 ><TD 587 ><CODE 588 CLASS="CONSTANT" 589 >V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD</CODE 590 > </TD 591 ><TD 592 >MPEG-2 SVCD-compatible stream</TD 593 ></TR 594 ></TBODY 595 ></TABLE 596 ></TD 597 ></TR 598 ><TR 599 ><TD 600 > </TD 601 ><TD 602 > </TD 603 ><TD 604 > </TD 605 ><TD 606 > </TD 607 ></TR 608 ><TR 609 ><TD 610 COLSPAN="2" 611 ><CODE 612 CLASS="CONSTANT" 613 >V4L2_CID_MPEG_STREAM_PID_PMT</CODE 614 > </TD 615 ><TD 616 >integer</TD 617 ><TD 618 > </TD 619 ></TR 620 ><TR 621 ><TD 622 > </TD 623 ><TD 624 COLSPAN="3" 625 >Program Map Table 626 Packet ID for the MPEG transport stream (default 16)</TD 627 ></TR 628 ><TR 629 ><TD 630 > </TD 631 ><TD 632 > </TD 633 ><TD 634 > </TD 635 ><TD 636 > </TD 637 ></TR 638 ><TR 639 ><TD 640 COLSPAN="2" 641 ><CODE 642 CLASS="CONSTANT" 643 >V4L2_CID_MPEG_STREAM_PID_AUDIO</CODE 644 > </TD 645 ><TD 646 >integer</TD 647 ><TD 648 > </TD 649 ></TR 650 ><TR 651 ><TD 652 > </TD 653 ><TD 654 COLSPAN="3" 655 >Audio Packet ID for 656 the MPEG transport stream (default 256)</TD 657 ></TR 658 ><TR 659 ><TD 660 > </TD 661 ><TD 662 > </TD 663 ><TD 664 > </TD 665 ><TD 666 > </TD 667 ></TR 668 ><TR 669 ><TD 670 COLSPAN="2" 671 ><CODE 672 CLASS="CONSTANT" 673 >V4L2_CID_MPEG_STREAM_PID_VIDEO</CODE 674 > </TD 675 ><TD 676 >integer</TD 677 ><TD 678 > </TD 679 ></TR 680 ><TR 681 ><TD 682 > </TD 683 ><TD 684 COLSPAN="3" 685 >Video Packet ID for 686 the MPEG transport stream (default 260)</TD 687 ></TR 688 ><TR 689 ><TD 690 > </TD 691 ><TD 692 > </TD 693 ><TD 694 > </TD 695 ><TD 696 > </TD 697 ></TR 698 ><TR 699 ><TD 700 COLSPAN="2" 701 ><CODE 702 CLASS="CONSTANT" 703 >V4L2_CID_MPEG_STREAM_PID_PCR</CODE 704 > </TD 705 ><TD 706 >integer</TD 707 ><TD 708 > </TD 709 ></TR 710 ><TR 711 ><TD 712 > </TD 713 ><TD 714 COLSPAN="3" 715 >Packet ID for the 716 MPEG transport stream carrying PCR fields (default 259)</TD 717 ></TR 718 ><TR 719 ><TD 720 > </TD 721 ><TD 722 > </TD 723 ><TD 724 > </TD 725 ><TD 726 > </TD 727 ></TR 728 ><TR 729 ><TD 730 COLSPAN="2" 731 ><CODE 732 CLASS="CONSTANT" 733 >V4L2_CID_MPEG_STREAM_PES_ID_AUDIO</CODE 734 > </TD 735 ><TD 736 >integer</TD 737 ><TD 738 > </TD 739 ></TR 740 ><TR 741 ><TD 742 > </TD 743 ><TD 744 COLSPAN="3" 745 >Audio ID for MPEG 746 PES</TD 747 ></TR 748 ><TR 749 ><TD 750 > </TD 751 ><TD 752 > </TD 753 ><TD 754 > </TD 755 ><TD 756 > </TD 757 ></TR 758 ><TR 759 ><TD 760 COLSPAN="2" 761 ><CODE 762 CLASS="CONSTANT" 763 >V4L2_CID_MPEG_STREAM_PES_ID_VIDEO</CODE 764 > </TD 765 ><TD 766 >integer</TD 767 ><TD 768 > </TD 769 ></TR 770 ><TR 771 ><TD 772 > </TD 773 ><TD 774 COLSPAN="3" 775 >Video ID for MPEG 776 PES</TD 777 ></TR 778 ><TR 779 ><TD 780 > </TD 781 ><TD 782 > </TD 783 ><TD 784 > </TD 785 ><TD 786 > </TD 787 ></TR 788 ><TR 789 ><TD 790 COLSPAN="2" 791 ><CODE 792 CLASS="CONSTANT" 793 >V4L2_CID_MPEG_STREAM_VBI_FMT</CODE 794 > </TD 795 ><TD 796 >enum</TD 797 ><TD 798 > </TD 799 ></TR 800 ><TR 801 ><TD 802 > </TD 803 ><TD 804 COLSPAN="3" 805 >Some cards can embed 806 VBI data (e. g. Closed Caption, Teletext) into the MPEG stream. This 807 control selects whether VBI data should be embedded, and if so, what 808 embedding method should be used. The list of possible VBI formats 809 depends on the driver. The currently defined VBI format types 810 are:</TD 811 ></TR 812 ><TR 813 ><TD 814 > </TD 815 ><TD 816 COLSPAN="3" 817 ><TABLE 818 BORDER="0" 819 CLASS="CALSTABLE" 820 ><COL><COL><TBODY 821 VALIGN="TOP" 822 ><TR 823 ><TD 824 ><CODE 825 CLASS="CONSTANT" 826 >V4L2_MPEG_STREAM_VBI_FMT_NONE</CODE 827 > </TD 828 ><TD 829 >No VBI in the MPEG stream</TD 830 ></TR 831 ><TR 832 ><TD 833 ><CODE 834 CLASS="CONSTANT" 835 >V4L2_MPEG_STREAM_VBI_FMT_IVTV</CODE 836 > </TD 837 ><TD 838 >VBI in private packets, IVTV format (documented 839 in the kernel sources in the file <TT 840 CLASS="FILENAME" 841 >Documentation/video4linux/cx2341x/README.vbi</TT 842 >)</TD 843 ></TR 844 ></TBODY 845 ></TABLE 846 ></TD 847 ></TR 848 ><TR 849 ><TD 850 > </TD 851 ><TD 852 > </TD 853 ><TD 854 > </TD 855 ><TD 856 > </TD 857 ></TR 858 ><TR 859 ><TD 860 COLSPAN="2" 861 ><CODE 862 CLASS="CONSTANT" 863 >V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ</CODE 864 > </TD 865 ><TD 866 >enum</TD 867 ><TD 868 > </TD 869 ></TR 870 ><TR 871 ><TD 872 > </TD 873 ><TD 874 COLSPAN="3" 875 >MPEG Audio sampling 876 frequency. Possible values are:</TD 877 ></TR 878 ><TR 879 ><TD 880 > </TD 881 ><TD 882 COLSPAN="3" 883 ><TABLE 884 BORDER="0" 885 CLASS="CALSTABLE" 886 ><COL><COL><TBODY 887 VALIGN="TOP" 888 ><TR 889 ><TD 890 ><CODE 891 CLASS="CONSTANT" 892 >V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100</CODE 893 > </TD 894 ><TD 895 >44.1 kHz</TD 896 ></TR 897 ><TR 898 ><TD 899 ><CODE 900 CLASS="CONSTANT" 901 >V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000</CODE 902 > </TD 903 ><TD 904 >48 kHz</TD 905 ></TR 906 ><TR 907 ><TD 908 ><CODE 909 CLASS="CONSTANT" 910 >V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000</CODE 911 > </TD 912 ><TD 913 >32 kHz</TD 914 ></TR 915 ></TBODY 916 ></TABLE 917 ></TD 918 ></TR 919 ><TR 920 ><TD 921 > </TD 922 ><TD 923 > </TD 924 ><TD 925 > </TD 926 ><TD 927 > </TD 928 ></TR 929 ><TR 930 ><TD 931 COLSPAN="2" 932 ><CODE 933 CLASS="CONSTANT" 934 >V4L2_CID_MPEG_AUDIO_ENCODING</CODE 935 > </TD 936 ><TD 937 >enum</TD 938 ><TD 939 > </TD 940 ></TR 941 ><TR 942 ><TD 943 > </TD 944 ><TD 945 COLSPAN="3" 946 >MPEG Audio encoding. 947 Possible values are:</TD 948 ></TR 949 ><TR 950 ><TD 951 > </TD 952 ><TD 953 COLSPAN="3" 954 ><TABLE 955 BORDER="0" 956 CLASS="CALSTABLE" 957 ><COL><COL><TBODY 958 VALIGN="TOP" 959 ><TR 960 ><TD 961 ><CODE 962 CLASS="CONSTANT" 963 >V4L2_MPEG_AUDIO_ENCODING_LAYER_1</CODE 964 > </TD 965 ><TD 966 >MPEG Layer I encoding</TD 967 ></TR 968 ><TR 969 ><TD 970 ><CODE 971 CLASS="CONSTANT" 972 >V4L2_MPEG_AUDIO_ENCODING_LAYER_2</CODE 973 > </TD 974 ><TD 975 >MPEG Layer II encoding</TD 976 ></TR 977 ><TR 978 ><TD 979 ><CODE 980 CLASS="CONSTANT" 981 >V4L2_MPEG_AUDIO_ENCODING_LAYER_3</CODE 982 > </TD 983 ><TD 984 >MPEG Layer III encoding</TD 985 ></TR 986 ></TBODY 987 ></TABLE 988 ></TD 989 ></TR 990 ><TR 991 ><TD 992 > </TD 993 ><TD 994 > </TD 995 ><TD 996 > </TD 997 ><TD 998 > </TD 999 ></TR 1000 ><TR 1001 ><TD 1002 COLSPAN="2" 1003 ><CODE 1004 CLASS="CONSTANT" 1005 >V4L2_CID_MPEG_AUDIO_L1_BITRATE</CODE 1006 > </TD 1007 ><TD 1008 >enum</TD 1009 ><TD 1010 > </TD 1011 ></TR 1012 ><TR 1013 ><TD 1014 > </TD 1015 ><TD 1016 COLSPAN="3" 1017 >Layer I bitrate. 1018 Possible values are:</TD 1019 ></TR 1020 ><TR 1021 ><TD 1022 > </TD 1023 ><TD 1024 COLSPAN="3" 1025 ><TABLE 1026 BORDER="0" 1027 CLASS="CALSTABLE" 1028 ><COL><COL><TBODY 1029 VALIGN="TOP" 1030 ><TR 1031 ><TD 1032 ><CODE 1033 CLASS="CONSTANT" 1034 >V4L2_MPEG_AUDIO_L1_BITRATE_32K</CODE 1035 > </TD 1036 ><TD 1037 >32 kbit/s</TD 1038 ></TR 1039 ><TR 1040 ><TD 1041 ><CODE 1042 CLASS="CONSTANT" 1043 >V4L2_MPEG_AUDIO_L1_BITRATE_64K</CODE 1044 > </TD 1045 ><TD 1046 >64 kbit/s</TD 1047 ></TR 1048 ><TR 1049 ><TD 1050 ><CODE 1051 CLASS="CONSTANT" 1052 >V4L2_MPEG_AUDIO_L1_BITRATE_96K</CODE 1053 > </TD 1054 ><TD 1055 >96 kbit/s</TD 1056 ></TR 1057 ><TR 1058 ><TD 1059 ><CODE 1060 CLASS="CONSTANT" 1061 >V4L2_MPEG_AUDIO_L1_BITRATE_128K</CODE 1062 > </TD 1063 ><TD 1064 >128 kbit/s</TD 1065 ></TR 1066 ><TR 1067 ><TD 1068 ><CODE 1069 CLASS="CONSTANT" 1070 >V4L2_MPEG_AUDIO_L1_BITRATE_160K</CODE 1071 > </TD 1072 ><TD 1073 >160 kbit/s</TD 1074 ></TR 1075 ><TR 1076 ><TD 1077 ><CODE 1078 CLASS="CONSTANT" 1079 >V4L2_MPEG_AUDIO_L1_BITRATE_192K</CODE 1080 > </TD 1081 ><TD 1082 >192 kbit/s</TD 1083 ></TR 1084 ><TR 1085 ><TD 1086 ><CODE 1087 CLASS="CONSTANT" 1088 >V4L2_MPEG_AUDIO_L1_BITRATE_224K</CODE 1089 > </TD 1090 ><TD 1091 >224 kbit/s</TD 1092 ></TR 1093 ><TR 1094 ><TD 1095 ><CODE 1096 CLASS="CONSTANT" 1097 >V4L2_MPEG_AUDIO_L1_BITRATE_256K</CODE 1098 > </TD 1099 ><TD 1100 >256 kbit/s</TD 1101 ></TR 1102 ><TR 1103 ><TD 1104 ><CODE 1105 CLASS="CONSTANT" 1106 >V4L2_MPEG_AUDIO_L1_BITRATE_288K</CODE 1107 > </TD 1108 ><TD 1109 >288 kbit/s</TD 1110 ></TR 1111 ><TR 1112 ><TD 1113 ><CODE 1114 CLASS="CONSTANT" 1115 >V4L2_MPEG_AUDIO_L1_BITRATE_320K</CODE 1116 > </TD 1117 ><TD 1118 >320 kbit/s</TD 1119 ></TR 1120 ><TR 1121 ><TD 1122 ><CODE 1123 CLASS="CONSTANT" 1124 >V4L2_MPEG_AUDIO_L1_BITRATE_352K</CODE 1125 > </TD 1126 ><TD 1127 >352 kbit/s</TD 1128 ></TR 1129 ><TR 1130 ><TD 1131 ><CODE 1132 CLASS="CONSTANT" 1133 >V4L2_MPEG_AUDIO_L1_BITRATE_384K</CODE 1134 > </TD 1135 ><TD 1136 >384 kbit/s</TD 1137 ></TR 1138 ><TR 1139 ><TD 1140 ><CODE 1141 CLASS="CONSTANT" 1142 >V4L2_MPEG_AUDIO_L1_BITRATE_416K</CODE 1143 > </TD 1144 ><TD 1145 >416 kbit/s</TD 1146 ></TR 1147 ><TR 1148 ><TD 1149 ><CODE 1150 CLASS="CONSTANT" 1151 >V4L2_MPEG_AUDIO_L1_BITRATE_448K</CODE 1152 > </TD 1153 ><TD 1154 >448 kbit/s</TD 1155 ></TR 1156 ></TBODY 1157 ></TABLE 1158 ></TD 1159 ></TR 1160 ><TR 1161 ><TD 1162 > </TD 1163 ><TD 1164 > </TD 1165 ><TD 1166 > </TD 1167 ><TD 1168 > </TD 1169 ></TR 1170 ><TR 1171 ><TD 1172 COLSPAN="2" 1173 ><CODE 1174 CLASS="CONSTANT" 1175 >V4L2_CID_MPEG_AUDIO_L2_BITRATE</CODE 1176 > </TD 1177 ><TD 1178 >enum</TD 1179 ><TD 1180 > </TD 1181 ></TR 1182 ><TR 1183 ><TD 1184 > </TD 1185 ><TD 1186 COLSPAN="3" 1187 >Layer II bitrate. 1188 Possible values are:</TD 1189 ></TR 1190 ><TR 1191 ><TD 1192 > </TD 1193 ><TD 1194 COLSPAN="3" 1195 ><TABLE 1196 BORDER="0" 1197 CLASS="CALSTABLE" 1198 ><COL><COL><TBODY 1199 VALIGN="TOP" 1200 ><TR 1201 ><TD 1202 ><CODE 1203 CLASS="CONSTANT" 1204 >V4L2_MPEG_AUDIO_L2_BITRATE_32K</CODE 1205 > </TD 1206 ><TD 1207 >32 kbit/s</TD 1208 ></TR 1209 ><TR 1210 ><TD 1211 ><CODE 1212 CLASS="CONSTANT" 1213 >V4L2_MPEG_AUDIO_L2_BITRATE_48K</CODE 1214 > </TD 1215 ><TD 1216 >48 kbit/s</TD 1217 ></TR 1218 ><TR 1219 ><TD 1220 ><CODE 1221 CLASS="CONSTANT" 1222 >V4L2_MPEG_AUDIO_L2_BITRATE_56K</CODE 1223 > </TD 1224 ><TD 1225 >56 kbit/s</TD 1226 ></TR 1227 ><TR 1228 ><TD 1229 ><CODE 1230 CLASS="CONSTANT" 1231 >V4L2_MPEG_AUDIO_L2_BITRATE_64K</CODE 1232 > </TD 1233 ><TD 1234 >64 kbit/s</TD 1235 ></TR 1236 ><TR 1237 ><TD 1238 ><CODE 1239 CLASS="CONSTANT" 1240 >V4L2_MPEG_AUDIO_L2_BITRATE_80K</CODE 1241 > </TD 1242 ><TD 1243 >80 kbit/s</TD 1244 ></TR 1245 ><TR 1246 ><TD 1247 ><CODE 1248 CLASS="CONSTANT" 1249 >V4L2_MPEG_AUDIO_L2_BITRATE_96K</CODE 1250 > </TD 1251 ><TD 1252 >96 kbit/s</TD 1253 ></TR 1254 ><TR 1255 ><TD 1256 ><CODE 1257 CLASS="CONSTANT" 1258 >V4L2_MPEG_AUDIO_L2_BITRATE_112K</CODE 1259 > </TD 1260 ><TD 1261 >112 kbit/s</TD 1262 ></TR 1263 ><TR 1264 ><TD 1265 ><CODE 1266 CLASS="CONSTANT" 1267 >V4L2_MPEG_AUDIO_L2_BITRATE_128K</CODE 1268 > </TD 1269 ><TD 1270 >128 kbit/s</TD 1271 ></TR 1272 ><TR 1273 ><TD 1274 ><CODE 1275 CLASS="CONSTANT" 1276 >V4L2_MPEG_AUDIO_L2_BITRATE_160K</CODE 1277 > </TD 1278 ><TD 1279 >160 kbit/s</TD 1280 ></TR 1281 ><TR 1282 ><TD 1283 ><CODE 1284 CLASS="CONSTANT" 1285 >V4L2_MPEG_AUDIO_L2_BITRATE_192K</CODE 1286 > </TD 1287 ><TD 1288 >192 kbit/s</TD 1289 ></TR 1290 ><TR 1291 ><TD 1292 ><CODE 1293 CLASS="CONSTANT" 1294 >V4L2_MPEG_AUDIO_L2_BITRATE_224K</CODE 1295 > </TD 1296 ><TD 1297 >224 kbit/s</TD 1298 ></TR 1299 ><TR 1300 ><TD 1301 ><CODE 1302 CLASS="CONSTANT" 1303 >V4L2_MPEG_AUDIO_L2_BITRATE_256K</CODE 1304 > </TD 1305 ><TD 1306 >256 kbit/s</TD 1307 ></TR 1308 ><TR 1309 ><TD 1310 ><CODE 1311 CLASS="CONSTANT" 1312 >V4L2_MPEG_AUDIO_L2_BITRATE_320K</CODE 1313 > </TD 1314 ><TD 1315 >320 kbit/s</TD 1316 ></TR 1317 ><TR 1318 ><TD 1319 ><CODE 1320 CLASS="CONSTANT" 1321 >V4L2_MPEG_AUDIO_L2_BITRATE_384K</CODE 1322 > </TD 1323 ><TD 1324 >384 kbit/s</TD 1325 ></TR 1326 ></TBODY 1327 ></TABLE 1328 ></TD 1329 ></TR 1330 ><TR 1331 ><TD 1332 > </TD 1333 ><TD 1334 > </TD 1335 ><TD 1336 > </TD 1337 ><TD 1338 > </TD 1339 ></TR 1340 ><TR 1341 ><TD 1342 COLSPAN="2" 1343 ><CODE 1344 CLASS="CONSTANT" 1345 >V4L2_CID_MPEG_AUDIO_L3_BITRATE</CODE 1346 > </TD 1347 ><TD 1348 >enum</TD 1349 ><TD 1350 > </TD 1351 ></TR 1352 ><TR 1353 ><TD 1354 > </TD 1355 ><TD 1356 COLSPAN="3" 1357 >Layer III bitrate. 1358 Possible values are:</TD 1359 ></TR 1360 ><TR 1361 ><TD 1362 > </TD 1363 ><TD 1364 COLSPAN="3" 1365 ><TABLE 1366 BORDER="0" 1367 CLASS="CALSTABLE" 1368 ><COL><COL><TBODY 1369 VALIGN="TOP" 1370 ><TR 1371 ><TD 1372 ><CODE 1373 CLASS="CONSTANT" 1374 >V4L2_MPEG_AUDIO_L3_BITRATE_32K</CODE 1375 > </TD 1376 ><TD 1377 >32 kbit/s</TD 1378 ></TR 1379 ><TR 1380 ><TD 1381 ><CODE 1382 CLASS="CONSTANT" 1383 >V4L2_MPEG_AUDIO_L3_BITRATE_40K</CODE 1384 > </TD 1385 ><TD 1386 >40 kbit/s</TD 1387 ></TR 1388 ><TR 1389 ><TD 1390 ><CODE 1391 CLASS="CONSTANT" 1392 >V4L2_MPEG_AUDIO_L3_BITRATE_48K</CODE 1393 > </TD 1394 ><TD 1395 >48 kbit/s</TD 1396 ></TR 1397 ><TR 1398 ><TD 1399 ><CODE 1400 CLASS="CONSTANT" 1401 >V4L2_MPEG_AUDIO_L3_BITRATE_56K</CODE 1402 > </TD 1403 ><TD 1404 >56 kbit/s</TD 1405 ></TR 1406 ><TR 1407 ><TD 1408 ><CODE 1409 CLASS="CONSTANT" 1410 >V4L2_MPEG_AUDIO_L3_BITRATE_64K</CODE 1411 > </TD 1412 ><TD 1413 >64 kbit/s</TD 1414 ></TR 1415 ><TR 1416 ><TD 1417 ><CODE 1418 CLASS="CONSTANT" 1419 >V4L2_MPEG_AUDIO_L3_BITRATE_80K</CODE 1420 > </TD 1421 ><TD 1422 >80 kbit/s</TD 1423 ></TR 1424 ><TR 1425 ><TD 1426 ><CODE 1427 CLASS="CONSTANT" 1428 >V4L2_MPEG_AUDIO_L3_BITRATE_96K</CODE 1429 > </TD 1430 ><TD 1431 >96 kbit/s</TD 1432 ></TR 1433 ><TR 1434 ><TD 1435 ><CODE 1436 CLASS="CONSTANT" 1437 >V4L2_MPEG_AUDIO_L3_BITRATE_112K</CODE 1438 > </TD 1439 ><TD 1440 >112 kbit/s</TD 1441 ></TR 1442 ><TR 1443 ><TD 1444 ><CODE 1445 CLASS="CONSTANT" 1446 >V4L2_MPEG_AUDIO_L3_BITRATE_128K</CODE 1447 > </TD 1448 ><TD 1449 >128 kbit/s</TD 1450 ></TR 1451 ><TR 1452 ><TD 1453 ><CODE 1454 CLASS="CONSTANT" 1455 >V4L2_MPEG_AUDIO_L3_BITRATE_160K</CODE 1456 > </TD 1457 ><TD 1458 >160 kbit/s</TD 1459 ></TR 1460 ><TR 1461 ><TD 1462 ><CODE 1463 CLASS="CONSTANT" 1464 >V4L2_MPEG_AUDIO_L3_BITRATE_192K</CODE 1465 > </TD 1466 ><TD 1467 >192 kbit/s</TD 1468 ></TR 1469 ><TR 1470 ><TD 1471 ><CODE 1472 CLASS="CONSTANT" 1473 >V4L2_MPEG_AUDIO_L3_BITRATE_224K</CODE 1474 > </TD 1475 ><TD 1476 >224 kbit/s</TD 1477 ></TR 1478 ><TR 1479 ><TD 1480 ><CODE 1481 CLASS="CONSTANT" 1482 >V4L2_MPEG_AUDIO_L3_BITRATE_256K</CODE 1483 > </TD 1484 ><TD 1485 >256 kbit/s</TD 1486 ></TR 1487 ><TR 1488 ><TD 1489 ><CODE 1490 CLASS="CONSTANT" 1491 >V4L2_MPEG_AUDIO_L3_BITRATE_320K</CODE 1492 > </TD 1493 ><TD 1494 >320 kbit/s</TD 1495 ></TR 1496 ></TBODY 1497 ></TABLE 1498 ></TD 1499 ></TR 1500 ><TR 1501 ><TD 1502 > </TD 1503 ><TD 1504 > </TD 1505 ><TD 1506 > </TD 1507 ><TD 1508 > </TD 1509 ></TR 1510 ><TR 1511 ><TD 1512 COLSPAN="2" 1513 ><CODE 1514 CLASS="CONSTANT" 1515 >V4L2_CID_MPEG_AUDIO_MODE</CODE 1516 > </TD 1517 ><TD 1518 >enum</TD 1519 ><TD 1520 > </TD 1521 ></TR 1522 ><TR 1523 ><TD 1524 > </TD 1525 ><TD 1526 COLSPAN="3" 1527 >MPEG Audio mode. 1528 Possible values are:</TD 1529 ></TR 1530 ><TR 1531 ><TD 1532 > </TD 1533 ><TD 1534 COLSPAN="3" 1535 ><TABLE 1536 BORDER="0" 1537 CLASS="CALSTABLE" 1538 ><COL><COL><TBODY 1539 VALIGN="TOP" 1540 ><TR 1541 ><TD 1542 ><CODE 1543 CLASS="CONSTANT" 1544 >V4L2_MPEG_AUDIO_MODE_STEREO</CODE 1545 > </TD 1546 ><TD 1547 >Stereo</TD 1548 ></TR 1549 ><TR 1550 ><TD 1551 ><CODE 1552 CLASS="CONSTANT" 1553 >V4L2_MPEG_AUDIO_MODE_JOINT_STEREO</CODE 1554 > </TD 1555 ><TD 1556 >Joint Stereo</TD 1557 ></TR 1558 ><TR 1559 ><TD 1560 ><CODE 1561 CLASS="CONSTANT" 1562 >V4L2_MPEG_AUDIO_MODE_DUAL</CODE 1563 > </TD 1564 ><TD 1565 >Bilingual</TD 1566 ></TR 1567 ><TR 1568 ><TD 1569 ><CODE 1570 CLASS="CONSTANT" 1571 >V4L2_MPEG_AUDIO_MODE_MONO</CODE 1572 > </TD 1573 ><TD 1574 >Mono</TD 1575 ></TR 1576 ></TBODY 1577 ></TABLE 1578 ></TD 1579 ></TR 1580 ><TR 1581 ><TD 1582 > </TD 1583 ><TD 1584 > </TD 1585 ><TD 1586 > </TD 1587 ><TD 1588 > </TD 1589 ></TR 1590 ><TR 1591 ><TD 1592 COLSPAN="2" 1593 ><CODE 1594 CLASS="CONSTANT" 1595 >V4L2_CID_MPEG_AUDIO_MODE_EXTENSION</CODE 1596 > </TD 1597 ><TD 1598 >enum</TD 1599 ><TD 1600 > </TD 1601 ></TR 1602 ><TR 1603 ><TD 1604 > </TD 1605 ><TD 1606 COLSPAN="3" 1607 >Joint Stereo 1608 audio mode extension. In Layer I and II they indicate which subbands 1609 are in intensity stereo. All other subbands are coded in stereo. Layer 1610 III is not (yet) supported. Possible values 1611 are:</TD 1612 ></TR 1613 ><TR 1614 ><TD 1615 > </TD 1616 ><TD 1617 COLSPAN="3" 1618 ><TABLE 1619 BORDER="0" 1620 CLASS="CALSTABLE" 1621 ><COL><COL><TBODY 1622 VALIGN="TOP" 1623 ><TR 1624 ><TD 1625 ><CODE 1626 CLASS="CONSTANT" 1627 >V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4</CODE 1628 > </TD 1629 ><TD 1630 >Subbands 4-31 in intensity stereo</TD 1631 ></TR 1632 ><TR 1633 ><TD 1634 ><CODE 1635 CLASS="CONSTANT" 1636 >V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_8</CODE 1637 > </TD 1638 ><TD 1639 >Subbands 8-31 in intensity stereo</TD 1640 ></TR 1641 ><TR 1642 ><TD 1643 ><CODE 1644 CLASS="CONSTANT" 1645 >V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_12</CODE 1646 > </TD 1647 ><TD 1648 >Subbands 12-31 in intensity stereo</TD 1649 ></TR 1650 ><TR 1651 ><TD 1652 ><CODE 1653 CLASS="CONSTANT" 1654 >V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16</CODE 1655 > </TD 1656 ><TD 1657 >Subbands 16-31 in intensity stereo</TD 1658 ></TR 1659 ></TBODY 1660 ></TABLE 1661 ></TD 1662 ></TR 1663 ><TR 1664 ><TD 1665 > </TD 1666 ><TD 1667 > </TD 1668 ><TD 1669 > </TD 1670 ><TD 1671 > </TD 1672 ></TR 1673 ><TR 1674 ><TD 1675 COLSPAN="2" 1676 ><CODE 1677 CLASS="CONSTANT" 1678 >V4L2_CID_MPEG_AUDIO_EMPHASIS</CODE 1679 > </TD 1680 ><TD 1681 >enum</TD 1682 ><TD 1683 > </TD 1684 ></TR 1685 ><TR 1686 ><TD 1687 > </TD 1688 ><TD 1689 COLSPAN="3" 1690 >Audio Emphasis. 1691 Possible values are:</TD 1692 ></TR 1693 ><TR 1694 ><TD 1695 > </TD 1696 ><TD 1697 COLSPAN="3" 1698 ><TABLE 1699 BORDER="0" 1700 CLASS="CALSTABLE" 1701 ><COL><COL><TBODY 1702 VALIGN="TOP" 1703 ><TR 1704 ><TD 1705 ><CODE 1706 CLASS="CONSTANT" 1707 >V4L2_MPEG_AUDIO_EMPHASIS_NONE</CODE 1708 > </TD 1709 ><TD 1710 >None</TD 1711 ></TR 1712 ><TR 1713 ><TD 1714 ><CODE 1715 CLASS="CONSTANT" 1716 >V4L2_MPEG_AUDIO_EMPHASIS_50_DIV_15_uS</CODE 1717 > </TD 1718 ><TD 1719 >50/15 microsecond emphasis</TD 1720 ></TR 1721 ><TR 1722 ><TD 1723 ><CODE 1724 CLASS="CONSTANT" 1725 >V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17</CODE 1726 > </TD 1727 ><TD 1728 >CCITT J.17</TD 1729 ></TR 1730 ></TBODY 1731 ></TABLE 1732 ></TD 1733 ></TR 1734 ><TR 1735 ><TD 1736 > </TD 1737 ><TD 1738 > </TD 1739 ><TD 1740 > </TD 1741 ><TD 1742 > </TD 1743 ></TR 1744 ><TR 1745 ><TD 1746 COLSPAN="2" 1747 ><CODE 1748 CLASS="CONSTANT" 1749 >V4L2_CID_MPEG_AUDIO_CRC</CODE 1750 > </TD 1751 ><TD 1752 >enum</TD 1753 ><TD 1754 > </TD 1755 ></TR 1756 ><TR 1757 ><TD 1758 > </TD 1759 ><TD 1760 COLSPAN="3" 1761 >CRC method. Possible 1762 values are:</TD 1763 ></TR 1764 ><TR 1765 ><TD 1766 > </TD 1767 ><TD 1768 COLSPAN="3" 1769 ><TABLE 1770 BORDER="0" 1771 CLASS="CALSTABLE" 1772 ><COL><COL><TBODY 1773 VALIGN="TOP" 1774 ><TR 1775 ><TD 1776 ><CODE 1777 CLASS="CONSTANT" 1778 >V4L2_MPEG_AUDIO_CRC_NONE</CODE 1779 > </TD 1780 ><TD 1781 >None</TD 1782 ></TR 1783 ><TR 1784 ><TD 1785 ><CODE 1786 CLASS="CONSTANT" 1787 >V4L2_MPEG_AUDIO_CRC_CRC16</CODE 1788 > </TD 1789 ><TD 1790 >16 bit parity check</TD 1791 ></TR 1792 ></TBODY 1793 ></TABLE 1794 ></TD 1795 ></TR 1796 ><TR 1797 ><TD 1798 > </TD 1799 ><TD 1800 > </TD 1801 ><TD 1802 > </TD 1803 ><TD 1804 > </TD 1805 ></TR 1806 ><TR 1807 ><TD 1808 COLSPAN="2" 1809 ><CODE 1810 CLASS="CONSTANT" 1811 >V4L2_CID_MPEG_AUDIO_MUTE</CODE 1812 > </TD 1813 ><TD 1814 >bool</TD 1815 ><TD 1816 > </TD 1817 ></TR 1818 ><TR 1819 ><TD 1820 > </TD 1821 ><TD 1822 COLSPAN="3" 1823 >Mutes the audio when 1824 capturing. This is not done by muting audio hardware, which can still 1825 produce a slight hiss, but in the encoder itself, guaranteeing a fixed 1826 and reproducable audio bitstream. 0 = unmuted, 1 = muted.</TD 1827 ></TR 1828 ><TR 1829 ><TD 1830 > </TD 1831 ><TD 1832 > </TD 1833 ><TD 1834 > </TD 1835 ><TD 1836 > </TD 1837 ></TR 1838 ><TR 1839 ><TD 1840 COLSPAN="2" 1841 ><CODE 1842 CLASS="CONSTANT" 1843 >V4L2_CID_MPEG_VIDEO_ENCODING</CODE 1844 > </TD 1845 ><TD 1846 >enum</TD 1847 ><TD 1848 > </TD 1849 ></TR 1850 ><TR 1851 ><TD 1852 > </TD 1853 ><TD 1854 COLSPAN="3" 1855 >MPEG Video encoding 1856 method. Possible values are:</TD 1857 ></TR 1858 ><TR 1859 ><TD 1860 > </TD 1861 ><TD 1862 COLSPAN="3" 1863 ><TABLE 1864 BORDER="0" 1865 CLASS="CALSTABLE" 1866 ><COL><COL><TBODY 1867 VALIGN="TOP" 1868 ><TR 1869 ><TD 1870 ><CODE 1871 CLASS="CONSTANT" 1872 >V4L2_MPEG_VIDEO_ENCODING_MPEG_1</CODE 1873 > </TD 1874 ><TD 1875 >MPEG-1 Video encoding</TD 1876 ></TR 1877 ><TR 1878 ><TD 1879 ><CODE 1880 CLASS="CONSTANT" 1881 >V4L2_MPEG_VIDEO_ENCODING_MPEG_2</CODE 1882 > </TD 1883 ><TD 1884 >MPEG-2 Video encoding</TD 1885 ></TR 1886 ></TBODY 1887 ></TABLE 1888 ></TD 1889 ></TR 1890 ><TR 1891 ><TD 1892 > </TD 1893 ><TD 1894 > </TD 1895 ><TD 1896 > </TD 1897 ><TD 1898 > </TD 1899 ></TR 1900 ><TR 1901 ><TD 1902 COLSPAN="2" 1903 ><CODE 1904 CLASS="CONSTANT" 1905 >V4L2_CID_MPEG_VIDEO_ASPECT</CODE 1906 > </TD 1907 ><TD 1908 >enum</TD 1909 ><TD 1910 > </TD 1911 ></TR 1912 ><TR 1913 ><TD 1914 > </TD 1915 ><TD 1916 COLSPAN="3" 1917 >Video aspect. 1918 Possible values are:</TD 1919 ></TR 1920 ><TR 1921 ><TD 1922 > </TD 1923 ><TD 1924 COLSPAN="3" 1925 ><TABLE 1926 BORDER="0" 1927 CLASS="CALSTABLE" 1928 ><COL><COL><TBODY 1929 VALIGN="TOP" 1930 ><TR 1931 ><TD 1932 ><CODE 1933 CLASS="CONSTANT" 1934 >V4L2_MPEG_VIDEO_ASPECT_1x1</CODE 1935 > </TD 1936 ><TD 1937 > </TD 1938 ></TR 1939 ><TR 1940 ><TD 1941 ><CODE 1942 CLASS="CONSTANT" 1943 >V4L2_MPEG_VIDEO_ASPECT_4x3</CODE 1944 > </TD 1945 ><TD 1946 > </TD 1947 ></TR 1948 ><TR 1949 ><TD 1950 ><CODE 1951 CLASS="CONSTANT" 1952 >V4L2_MPEG_VIDEO_ASPECT_16x9</CODE 1953 > </TD 1954 ><TD 1955 > </TD 1956 ></TR 1957 ><TR 1958 ><TD 1959 ><CODE 1960 CLASS="CONSTANT" 1961 >V4L2_MPEG_VIDEO_ASPECT_221x100</CODE 1962 > </TD 1963 ><TD 1964 > </TD 1965 ></TR 1966 ></TBODY 1967 ></TABLE 1968 ></TD 1969 ></TR 1970 ><TR 1971 ><TD 1972 > </TD 1973 ><TD 1974 > </TD 1975 ><TD 1976 > </TD 1977 ><TD 1978 > </TD 1979 ></TR 1980 ><TR 1981 ><TD 1982 COLSPAN="2" 1983 ><CODE 1984 CLASS="CONSTANT" 1985 >V4L2_CID_MPEG_VIDEO_B_FRAMES</CODE 1986 > </TD 1987 ><TD 1988 >integer</TD 1989 ><TD 1990 > </TD 1991 ></TR 1992 ><TR 1993 ><TD 1994 > </TD 1995 ><TD 1996 COLSPAN="3" 1997 >Number of B-Frames 1998 (default 2)</TD 1999 ></TR 2000 ><TR 2001 ><TD 2002 > </TD 2003 ><TD 2004 > </TD 2005 ><TD 2006 > </TD 2007 ><TD 2008 > </TD 2009 ></TR 2010 ><TR 2011 ><TD 2012 COLSPAN="2" 2013 ><CODE 2014 CLASS="CONSTANT" 2015 >V4L2_CID_MPEG_VIDEO_GOP_SIZE</CODE 2016 > </TD 2017 ><TD 2018 >integer</TD 2019 ><TD 2020 > </TD 2021 ></TR 2022 ><TR 2023 ><TD 2024 > </TD 2025 ><TD 2026 COLSPAN="3" 2027 >GOP size (default 2028 12)</TD 2029 ></TR 2030 ><TR 2031 ><TD 2032 > </TD 2033 ><TD 2034 > </TD 2035 ><TD 2036 > </TD 2037 ><TD 2038 > </TD 2039 ></TR 2040 ><TR 2041 ><TD 2042 COLSPAN="2" 2043 ><CODE 2044 CLASS="CONSTANT" 2045 >V4L2_CID_MPEG_VIDEO_GOP_CLOSURE</CODE 2046 > </TD 2047 ><TD 2048 >bool</TD 2049 ><TD 2050 > </TD 2051 ></TR 2052 ><TR 2053 ><TD 2054 > </TD 2055 ><TD 2056 COLSPAN="3" 2057 >GOP closure (default 2058 1)</TD 2059 ></TR 2060 ><TR 2061 ><TD 2062 > </TD 2063 ><TD 2064 > </TD 2065 ><TD 2066 > </TD 2067 ><TD 2068 > </TD 2069 ></TR 2070 ><TR 2071 ><TD 2072 COLSPAN="2" 2073 ><CODE 2074 CLASS="CONSTANT" 2075 >V4L2_CID_MPEG_VIDEO_PULLDOWN</CODE 2076 > </TD 2077 ><TD 2078 >bool</TD 2079 ><TD 2080 > </TD 2081 ></TR 2082 ><TR 2083 ><TD 2084 > </TD 2085 ><TD 2086 COLSPAN="3" 2087 >Enable 3:2 pulldown 2088 (default 0)</TD 2089 ></TR 2090 ><TR 2091 ><TD 2092 > </TD 2093 ><TD 2094 > </TD 2095 ><TD 2096 > </TD 2097 ><TD 2098 > </TD 2099 ></TR 2100 ><TR 2101 ><TD 2102 COLSPAN="2" 2103 ><CODE 2104 CLASS="CONSTANT" 2105 >V4L2_CID_MPEG_VIDEO_BITRATE_MODE</CODE 2106 > </TD 2107 ><TD 2108 >enum</TD 2109 ><TD 2110 > </TD 2111 ></TR 2112 ><TR 2113 ><TD 2114 > </TD 2115 ><TD 2116 COLSPAN="3" 2117 >Video bitrate mode. 2118 Possible values are:</TD 2119 ></TR 2120 ><TR 2121 ><TD 2122 > </TD 2123 ><TD 2124 COLSPAN="3" 2125 ><TABLE 2126 BORDER="0" 2127 CLASS="CALSTABLE" 2128 ><COL><COL><TBODY 2129 VALIGN="TOP" 2130 ><TR 2131 ><TD 2132 ><CODE 2133 CLASS="CONSTANT" 2134 >V4L2_MPEG_VIDEO_BITRATE_MODE_VBR</CODE 2135 > </TD 2136 ><TD 2137 >Variable bitrate</TD 2138 ></TR 2139 ><TR 2140 ><TD 2141 ><CODE 2142 CLASS="CONSTANT" 2143 >V4L2_MPEG_VIDEO_BITRATE_MODE_CBR</CODE 2144 > </TD 2145 ><TD 2146 >Constant bitrate</TD 2147 ></TR 2148 ></TBODY 2149 ></TABLE 2150 ></TD 2151 ></TR 2152 ><TR 2153 ><TD 2154 > </TD 2155 ><TD 2156 > </TD 2157 ><TD 2158 > </TD 2159 ><TD 2160 > </TD 2161 ></TR 2162 ><TR 2163 ><TD 2164 COLSPAN="2" 2165 ><CODE 2166 CLASS="CONSTANT" 2167 >V4L2_CID_MPEG_VIDEO_BITRATE</CODE 2168 > </TD 2169 ><TD 2170 >integer</TD 2171 ><TD 2172 > </TD 2173 ></TR 2174 ><TR 2175 ><TD 2176 > </TD 2177 ><TD 2178 COLSPAN="3" 2179 >Video bitrate in bits 2180 per second.</TD 2181 ></TR 2182 ><TR 2183 ><TD 2184 > </TD 2185 ><TD 2186 > </TD 2187 ><TD 2188 > </TD 2189 ><TD 2190 > </TD 2191 ></TR 2192 ><TR 2193 ><TD 2194 COLSPAN="2" 2195 ><CODE 2196 CLASS="CONSTANT" 2197 >V4L2_CID_MPEG_VIDEO_BITRATE_PEAK</CODE 2198 > </TD 2199 ><TD 2200 >integer</TD 2201 ><TD 2202 > </TD 2203 ></TR 2204 ><TR 2205 ><TD 2206 > </TD 2207 ><TD 2208 COLSPAN="3" 2209 >Peak video bitrate in 2210 bits per second. Must be larger or equal to the average video bitrate. 2211 It is ignored if the video bitrate mode is set to constant 2212 bitrate.</TD 2213 ></TR 2214 ><TR 2215 ><TD 2216 > </TD 2217 ><TD 2218 > </TD 2219 ><TD 2220 > </TD 2221 ><TD 2222 > </TD 2223 ></TR 2224 ><TR 2225 ><TD 2226 COLSPAN="2" 2227 ><CODE 2228 CLASS="CONSTANT" 2229 >V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION</CODE 2230 > </TD 2231 ><TD 2232 >integer</TD 2233 ><TD 2234 > </TD 2235 ></TR 2236 ><TR 2237 ><TD 2238 > </TD 2239 ><TD 2240 COLSPAN="3" 2241 >For every captured 2242 frame, skip this many subsequent frames (default 0).</TD 2243 ></TR 2244 ><TR 2245 ><TD 2246 > </TD 2247 ><TD 2248 > </TD 2249 ><TD 2250 > </TD 2251 ><TD 2252 > </TD 2253 ></TR 2254 ><TR 2255 ><TD 2256 COLSPAN="2" 2257 ><CODE 2258 CLASS="CONSTANT" 2259 >V4L2_CID_MPEG_VIDEO_MUTE</CODE 2260 > </TD 2261 ><TD 2262 >bool</TD 2263 ><TD 2264 > </TD 2265 ></TR 2266 ><TR 2267 ><TD 2268 > </TD 2269 ><TD 2270 COLSPAN="3" 2271 >"Mutes" the video to a 2272 fixed color when capturing. This is useful for testing, to produce a 2273 fixed video bitstream. 0 = unmuted, 1 = muted.</TD 2274 ></TR 2275 ><TR 2276 ><TD 2277 > </TD 2278 ><TD 2279 > </TD 2280 ><TD 2281 > </TD 2282 ><TD 2283 > </TD 2284 ></TR 2285 ><TR 2286 ><TD 2287 COLSPAN="2" 2288 ><CODE 2289 CLASS="CONSTANT" 2290 >V4L2_CID_MPEG_VIDEO_MUTE_YUV</CODE 2291 > </TD 2292 ><TD 2293 >integer</TD 2294 ><TD 2295 > </TD 2296 ></TR 2297 ><TR 2298 ><TD 2299 > </TD 2300 ><TD 2301 COLSPAN="3" 2302 >Sets the "mute" color 2303 of the video. The supplied 32-bit integer is interpreted as follows (bit 2304 0 = least significant bit):</TD 2305 ></TR 2306 ><TR 2307 ><TD 2308 > </TD 2309 ><TD 2310 COLSPAN="3" 2311 ><TABLE 2312 BORDER="0" 2313 CLASS="CALSTABLE" 2314 ><COL><COL><TBODY 2315 VALIGN="TOP" 2316 ><TR 2317 ><TD 2318 >Bit 0:7</TD 2319 ><TD 2320 >V chrominance information</TD 2321 ></TR 2322 ><TR 2323 ><TD 2324 >Bit 8:15</TD 2325 ><TD 2326 >U chrominance information</TD 2327 ></TR 2328 ><TR 2329 ><TD 2330 >Bit 16:23</TD 2331 ><TD 2332 >Y luminance information</TD 2333 ></TR 2334 ><TR 2335 ><TD 2336 >Bit 24:31</TD 2337 ><TD 2338 >Must be zero.</TD 2339 ></TR 2340 ></TBODY 2341 ></TABLE 2342 ></TD 2343 ></TR 2344 ></TBODY 2345 ></TABLE 2346 ></DIV 2347 ></DIV 2348 ><DIV 2349 CLASS="SECTION" 2350 ><H3 2351 CLASS="SECTION" 2352 ><A 2353 NAME="AEN1509" 2354 >1.9.5.2. CX2341x MPEG Controls</A 2355 ></H3 2356 ><P 2357 >The following MPEG class controls deal with MPEG 2358 encoding settings that are specific to the Conexant CX23415 and 2359 CX23416 MPEG encoding chips.</P 2360 ><DIV 2361 CLASS="TABLE" 2362 ><A 2363 NAME="CX2341X-CONTROL-ID" 2364 ></A 2365 ><P 2366 ><B 2367 >Table 1-3. CX2341x Control IDs</B 2368 ></P 2369 ><TABLE 2370 BORDER="0" 2371 FRAME="void" 2372 WIDTH="100%" 2373 CLASS="CALSTABLE" 2374 ><COL 2375 WIDTH="7%" 2376 TITLE="C1"><COL 2377 WIDTH="40%" 2378 TITLE="C2"><COL 2379 WIDTH="13%" 2380 TITLE="C3"><COL 2381 WIDTH="40%" 2382 TITLE="C4"><THEAD 2383 ><TR 2384 ><TH 2385 COLSPAN="2" 2386 ALIGN="LEFT" 2387 >ID</TH 2388 ><TH 2389 ALIGN="LEFT" 2390 >Type</TH 2391 ><TD 2392 > </TD 2393 ></TR 2394 ><TR 2395 ><TH 2396 > </TH 2397 ><TH 2398 COLSPAN="3" 2399 ALIGN="LEFT" 2400 >Description</TH 2401 ></TR 2402 ></THEAD 2403 ><TBODY 2404 VALIGN="TOP" 2405 ><TR 2406 ><TD 2407 > </TD 2408 ><TD 2409 > </TD 2410 ><TD 2411 > </TD 2412 ><TD 2413 > </TD 2414 ></TR 2415 ><TR 2416 ><TD 2417 COLSPAN="2" 2418 ><CODE 2419 CLASS="CONSTANT" 2420 >V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE</CODE 2421 > </TD 2422 ><TD 2423 >enum</TD 2424 ><TD 2425 > </TD 2426 ></TR 2427 ><TR 2428 ><TD 2429 > </TD 2430 ><TD 2431 COLSPAN="3" 2432 >Sets the Spatial 2433 Filter mode (default <CODE 2434 CLASS="CONSTANT" 2435 >MANUAL</CODE 2436 >). Possible values 2437 are:</TD 2438 ></TR 2439 ><TR 2440 ><TD 2441 > </TD 2442 ><TD 2443 COLSPAN="3" 2444 ><TABLE 2445 BORDER="0" 2446 CLASS="CALSTABLE" 2447 ><COL><COL><TBODY 2448 VALIGN="TOP" 2449 ><TR 2450 ><TD 2451 ><CODE 2452 CLASS="CONSTANT" 2453 >V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL</CODE 2454 > </TD 2455 ><TD 2456 >Choose the filter manually</TD 2457 ></TR 2458 ><TR 2459 ><TD 2460 ><CODE 2461 CLASS="CONSTANT" 2462 >V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO</CODE 2463 > </TD 2464 ><TD 2465 >Choose the filter automatically</TD 2466 ></TR 2467 ></TBODY 2468 ></TABLE 2469 ></TD 2470 ></TR 2471 ><TR 2472 ><TD 2473 > </TD 2474 ><TD 2475 > </TD 2476 ><TD 2477 > </TD 2478 ><TD 2479 > </TD 2480 ></TR 2481 ><TR 2482 ><TD 2483 COLSPAN="2" 2484 ><CODE 2485 CLASS="CONSTANT" 2486 >V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER</CODE 2487 > </TD 2488 ><TD 2489 >integer (0-15)</TD 2490 ><TD 2491 > </TD 2492 ></TR 2493 ><TR 2494 ><TD 2495 > </TD 2496 ><TD 2497 COLSPAN="3" 2498 >The setting for the 2499 Spatial Filter. 0 = off, 15 = maximum. (Default is 0.)</TD 2500 ></TR 2501 ><TR 2502 ><TD 2503 > </TD 2504 ><TD 2505 > </TD 2506 ><TD 2507 > </TD 2508 ><TD 2509 > </TD 2510 ></TR 2511 ><TR 2512 ><TD 2513 COLSPAN="2" 2514 ><CODE 2515 CLASS="CONSTANT" 2516 >V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE</CODE 2517 > </TD 2518 ><TD 2519 >enum</TD 2520 ><TD 2521 > </TD 2522 ></TR 2523 ><TR 2524 ><TD 2525 > </TD 2526 ><TD 2527 COLSPAN="3" 2528 >Select the algorithm 2529 to use for the Luma Spatial Filter (default 2530 <CODE 2531 CLASS="CONSTANT" 2532 >1D_HOR</CODE 2533 >). Possible values:</TD 2534 ></TR 2535 ><TR 2536 ><TD 2537 > </TD 2538 ><TD 2539 COLSPAN="3" 2540 ><TABLE 2541 BORDER="0" 2542 CLASS="CALSTABLE" 2543 ><COL><COL><TBODY 2544 VALIGN="TOP" 2545 ><TR 2546 ><TD 2547 ><CODE 2548 CLASS="CONSTANT" 2549 >V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF</CODE 2550 > </TD 2551 ><TD 2552 >No filter</TD 2553 ></TR 2554 ><TR 2555 ><TD 2556 ><CODE 2557 CLASS="CONSTANT" 2558 >V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR</CODE 2559 > </TD 2560 ><TD 2561 >One-dimensional horizontal</TD 2562 ></TR 2563 ><TR 2564 ><TD 2565 ><CODE 2566 CLASS="CONSTANT" 2567 >V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_VERT</CODE 2568 > </TD 2569 ><TD 2570 >One-dimensional vertical</TD 2571 ></TR 2572 ><TR 2573 ><TD 2574 ><CODE 2575 CLASS="CONSTANT" 2576 >V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_HV_SEPARABLE</CODE 2577 > </TD 2578 ><TD 2579 >Two-dimensional separable</TD 2580 ></TR 2581 ><TR 2582 ><TD 2583 ><CODE 2584 CLASS="CONSTANT" 2585 >V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE</CODE 2586 > </TD 2587 ><TD 2588 >Two-dimensional symmetrical 2589 non-separable</TD 2590 ></TR 2591 ></TBODY 2592 ></TABLE 2593 ></TD 2594 ></TR 2595 ><TR 2596 ><TD 2597 > </TD 2598 ><TD 2599 > </TD 2600 ><TD 2601 > </TD 2602 ><TD 2603 > </TD 2604 ></TR 2605 ><TR 2606 ><TD 2607 COLSPAN="2" 2608 ><CODE 2609 CLASS="CONSTANT" 2610 >V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE</CODE 2611 > </TD 2612 ><TD 2613 >enum</TD 2614 ><TD 2615 > </TD 2616 ></TR 2617 ><TR 2618 ><TD 2619 > </TD 2620 ><TD 2621 COLSPAN="3" 2622 >Select the algorithm 2623 for the Chroma Spatial Filter (default <CODE 2624 CLASS="CONSTANT" 2625 >1D_HOR</CODE 2626 >). 2627 Possible values are:</TD 2628 ></TR 2629 ><TR 2630 ><TD 2631 > </TD 2632 ><TD 2633 COLSPAN="3" 2634 ><TABLE 2635 BORDER="0" 2636 CLASS="CALSTABLE" 2637 ><COL><COL><TBODY 2638 VALIGN="TOP" 2639 ><TR 2640 ><TD 2641 ><CODE 2642 CLASS="CONSTANT" 2643 >V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF</CODE 2644 > </TD 2645 ><TD 2646 >No filter</TD 2647 ></TR 2648 ><TR 2649 ><TD 2650 ><CODE 2651 CLASS="CONSTANT" 2652 >V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR</CODE 2653 > </TD 2654 ><TD 2655 >One-dimensional horizontal</TD 2656 ></TR 2657 ></TBODY 2658 ></TABLE 2659 ></TD 2660 ></TR 2661 ><TR 2662 ><TD 2663 > </TD 2664 ><TD 2665 > </TD 2666 ><TD 2667 > </TD 2668 ><TD 2669 > </TD 2670 ></TR 2671 ><TR 2672 ><TD 2673 COLSPAN="2" 2674 ><CODE 2675 CLASS="CONSTANT" 2676 >V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE</CODE 2677 > </TD 2678 ><TD 2679 >enum</TD 2680 ><TD 2681 > </TD 2682 ></TR 2683 ><TR 2684 ><TD 2685 > </TD 2686 ><TD 2687 COLSPAN="3" 2688 >Sets the Temporal 2689 Filter mode (default <CODE 2690 CLASS="CONSTANT" 2691 >MANUAL</CODE 2692 >). Possible values 2693 are:</TD 2694 ></TR 2695 ><TR 2696 ><TD 2697 > </TD 2698 ><TD 2699 COLSPAN="3" 2700 ><TABLE 2701 BORDER="0" 2702 CLASS="CALSTABLE" 2703 ><COL><COL><TBODY 2704 VALIGN="TOP" 2705 ><TR 2706 ><TD 2707 ><CODE 2708 CLASS="CONSTANT" 2709 >V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL</CODE 2710 > </TD 2711 ><TD 2712 >Choose the filter manually</TD 2713 ></TR 2714 ><TR 2715 ><TD 2716 ><CODE 2717 CLASS="CONSTANT" 2718 >V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO</CODE 2719 > </TD 2720 ><TD 2721 >Choose the filter automatically</TD 2722 ></TR 2723 ></TBODY 2724 ></TABLE 2725 ></TD 2726 ></TR 2727 ><TR 2728 ><TD 2729 > </TD 2730 ><TD 2731 > </TD 2732 ><TD 2733 > </TD 2734 ><TD 2735 > </TD 2736 ></TR 2737 ><TR 2738 ><TD 2739 COLSPAN="2" 2740 ><CODE 2741 CLASS="CONSTANT" 2742 >V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER</CODE 2743 > </TD 2744 ><TD 2745 >integer (0-31)</TD 2746 ><TD 2747 > </TD 2748 ></TR 2749 ><TR 2750 ><TD 2751 > </TD 2752 ><TD 2753 COLSPAN="3" 2754 >The setting for the 2755 Temporal Filter. 0 = off, 31 = maximum. (Default is 8 for full-scale 2756 capturing and 0 for scaled capturing.)</TD 2757 ></TR 2758 ><TR 2759 ><TD 2760 > </TD 2761 ><TD 2762 > </TD 2763 ><TD 2764 > </TD 2765 ><TD 2766 > </TD 2767 ></TR 2768 ><TR 2769 ><TD 2770 COLSPAN="2" 2771 ><CODE 2772 CLASS="CONSTANT" 2773 >V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE</CODE 2774 > </TD 2775 ><TD 2776 >enum</TD 2777 ><TD 2778 > </TD 2779 ></TR 2780 ><TR 2781 ><TD 2782 > </TD 2783 ><TD 2784 COLSPAN="3" 2785 >Median Filter Type 2786 (default <CODE 2787 CLASS="CONSTANT" 2788 >OFF</CODE 2789 >). Possible values are:</TD 2790 ></TR 2791 ><TR 2792 ><TD 2793 > </TD 2794 ><TD 2795 COLSPAN="3" 2796 ><TABLE 2797 BORDER="0" 2798 CLASS="CALSTABLE" 2799 ><COL><COL><TBODY 2800 VALIGN="TOP" 2801 ><TR 2802 ><TD 2803 ><CODE 2804 CLASS="CONSTANT" 2805 >V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF</CODE 2806 > </TD 2807 ><TD 2808 >No filter</TD 2809 ></TR 2810 ><TR 2811 ><TD 2812 ><CODE 2813 CLASS="CONSTANT" 2814 >V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR</CODE 2815 > </TD 2816 ><TD 2817 >Horizontal filter</TD 2818 ></TR 2819 ><TR 2820 ><TD 2821 ><CODE 2822 CLASS="CONSTANT" 2823 >V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_VERT</CODE 2824 > </TD 2825 ><TD 2826 >Vertical filter</TD 2827 ></TR 2828 ><TR 2829 ><TD 2830 ><CODE 2831 CLASS="CONSTANT" 2832 >V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR_VERT</CODE 2833 > </TD 2834 ><TD 2835 >Horizontal and vertical filter</TD 2836 ></TR 2837 ><TR 2838 ><TD 2839 ><CODE 2840 CLASS="CONSTANT" 2841 >V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG</CODE 2842 > </TD 2843 ><TD 2844 >Diagonal filter</TD 2845 ></TR 2846 ></TBODY 2847 ></TABLE 2848 ></TD 2849 ></TR 2850 ><TR 2851 ><TD 2852 > </TD 2853 ><TD 2854 > </TD 2855 ><TD 2856 > </TD 2857 ><TD 2858 > </TD 2859 ></TR 2860 ><TR 2861 ><TD 2862 COLSPAN="2" 2863 ><CODE 2864 CLASS="CONSTANT" 2865 >V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM</CODE 2866 > </TD 2867 ><TD 2868 >integer (0-255)</TD 2869 ><TD 2870 > </TD 2871 ></TR 2872 ><TR 2873 ><TD 2874 > </TD 2875 ><TD 2876 COLSPAN="3" 2877 >Threshold above which 2878 the luminance median filter is enabled (default 0)</TD 2879 ></TR 2880 ><TR 2881 ><TD 2882 > </TD 2883 ><TD 2884 > </TD 2885 ><TD 2886 > </TD 2887 ><TD 2888 > </TD 2889 ></TR 2890 ><TR 2891 ><TD 2892 COLSPAN="2" 2893 ><CODE 2894 CLASS="CONSTANT" 2895 >V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP</CODE 2896 > </TD 2897 ><TD 2898 >integer (0-255)</TD 2899 ><TD 2900 > </TD 2901 ></TR 2902 ><TR 2903 ><TD 2904 > </TD 2905 ><TD 2906 COLSPAN="3" 2907 >Threshold below which 2908 the luminance median filter is enabled (default 255)</TD 2909 ></TR 2910 ><TR 2911 ><TD 2912 > </TD 2913 ><TD 2914 > </TD 2915 ><TD 2916 > </TD 2917 ><TD 2918 > </TD 2919 ></TR 2920 ><TR 2921 ><TD 2922 COLSPAN="2" 2923 ><CODE 2924 CLASS="CONSTANT" 2925 >V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM</CODE 2926 > </TD 2927 ><TD 2928 >integer (0-255)</TD 2929 ><TD 2930 > </TD 2931 ></TR 2932 ><TR 2933 ><TD 2934 > </TD 2935 ><TD 2936 COLSPAN="3" 2937 >Threshold above which 2938 the chroma median filter is enabled (default 0)</TD 2939 ></TR 2940 ><TR 2941 ><TD 2942 > </TD 2943 ><TD 2944 > </TD 2945 ><TD 2946 > </TD 2947 ><TD 2948 > </TD 2949 ></TR 2950 ><TR 2951 ><TD 2952 COLSPAN="2" 2953 ><CODE 2954 CLASS="CONSTANT" 2955 >V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP</CODE 2956 > </TD 2957 ><TD 2958 >integer (0-255)</TD 2959 ><TD 2960 > </TD 2961 ></TR 2962 ><TR 2963 ><TD 2964 > </TD 2965 ><TD 2966 COLSPAN="3" 2967 >Threshold below which 2968 the chroma median filter is enabled (default 255)</TD 2969 ></TR 2970 ><TR 2971 ><TD 2972 > </TD 2973 ><TD 2974 > </TD 2975 ><TD 2976 > </TD 2977 ><TD 2978 > </TD 2979 ></TR 2980 ><TR 2981 ><TD 2982 COLSPAN="2" 2983 ><CODE 2984 CLASS="CONSTANT" 2985 >V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS</CODE 2986 > </TD 2987 ><TD 2988 >bool</TD 2989 ><TD 2990 > </TD 2991 ></TR 2992 ><TR 2993 ><TD 2994 > </TD 2995 ><TD 2996 COLSPAN="3" 2997 >The CX2341X MPEG encoder 2998 can insert one empty MPEG-2 PES packet into the stream between every 2999 four video frames. The packet size is 2048 bytes, including the 3000 packet_start_code_prefix and stream_id fields. The stream_id is 0xBF 3001 (private stream 2). The payload consists of 0x00 bytes, to be filled 3002 in by the application. 0 = do not insert, 1 = insert packets.</TD 3003 ></TR 3004 ></TBODY 3005 ></TABLE 3006 ></DIV 3007 ></DIV 3008 ></DIV 3009 ><DIV 3010 CLASS="SECTION" 3011 ><H2 3012 CLASS="SECTION" 3013 ><A 3014 NAME="CAMERA-CONTROLS" 3015 >1.9.6. Camera Control Reference</A 3016 ></H2 3017 ><P 3018 >The Camera class includes controls for mechanical (or 3019 equivalent digital) features of a device such as controllable lenses 3020 or sensors.</P 3021 ><DIV 3022 CLASS="TABLE" 3023 ><A 3024 NAME="CAMERA-CONTROL-ID" 3025 ></A 3026 ><P 3027 ><B 3028 >Table 1-4. Camera Control IDs</B 3029 ></P 3030 ><TABLE 3031 BORDER="0" 3032 FRAME="void" 3033 WIDTH="100%" 3034 CLASS="CALSTABLE" 3035 ><COL 3036 WIDTH="7%" 3037 TITLE="C1"><COL 3038 WIDTH="40%" 3039 TITLE="C2"><COL 3040 WIDTH="13%" 3041 TITLE="C3"><COL 3042 WIDTH="40%" 3043 TITLE="C4"><THEAD 3044 ><TR 3045 ><TH 3046 COLSPAN="2" 3047 ALIGN="LEFT" 3048 >ID</TH 3049 ><TH 3050 ALIGN="LEFT" 3051 >Type</TH 3052 ><TD 3053 > </TD 3054 ></TR 3055 ><TR 3056 ><TH 3057 > </TH 3058 ><TH 3059 COLSPAN="3" 3060 ALIGN="LEFT" 3061 >Description</TH 3062 ></TR 3063 ></THEAD 3064 ><TBODY 3065 VALIGN="TOP" 3066 ><TR 3067 ><TD 3068 > </TD 3069 ><TD 3070 > </TD 3071 ><TD 3072 > </TD 3073 ><TD 3074 > </TD 3075 ></TR 3076 ><TR 3077 ><TD 3078 COLSPAN="2" 3079 ><CODE 3080 CLASS="CONSTANT" 3081 >V4L2_CID_CAMERA_CLASS</CODE 3082 > </TD 3083 ><TD 3084 >class</TD 3085 ><TD 3086 > </TD 3087 ></TR 3088 ><TR 3089 ><TD 3090 > </TD 3091 ><TD 3092 COLSPAN="3" 3093 >The Camera class 3094 descriptor. Calling <A 3095 HREF="r13317.htm" 3096 ><CODE 3097 CLASS="CONSTANT" 3098 >VIDIOC_QUERYCTRL</CODE 3099 ></A 3100 > for this control will return a 3101 description of this control class.</TD 3102 ></TR 3103 ><TR 3104 ><TD 3105 > </TD 3106 ><TD 3107 > </TD 3108 ><TD 3109 > </TD 3110 ><TD 3111 > </TD 3112 ></TR 3113 ><TR 3114 ><TD 3115 COLSPAN="2" 3116 ><CODE 3117 CLASS="CONSTANT" 3118 >V4L2_CID_EXPOSURE_AUTO</CODE 3119 > </TD 3120 ><TD 3121 >integer</TD 3122 ><TD 3123 > </TD 3124 ></TR 3125 ><TR 3126 ><TD 3127 > </TD 3128 ><TD 3129 COLSPAN="3" 3130 >Enables automatic 3131 adjustments of the exposure time and/or iris aperture. The effect of 3132 manual changes of the exposure time or iris aperture while these 3133 features are enabled is undefined, drivers should ignore such 3134 requests. Possible values are:</TD 3135 ></TR 3136 ><TR 3137 ><TD 3138 > </TD 3139 ><TD 3140 COLSPAN="3" 3141 ><TABLE 3142 BORDER="0" 3143 CLASS="CALSTABLE" 3144 ><COL><COL><TBODY 3145 VALIGN="TOP" 3146 ><TR 3147 ><TD 3148 ><CODE 3149 CLASS="CONSTANT" 3150 >V4L2_EXPOSURE_AUTO</CODE 3151 > </TD 3152 ><TD 3153 >Automatic exposure time, automatic iris 3154 aperture.</TD 3155 ></TR 3156 ><TR 3157 ><TD 3158 ><CODE 3159 CLASS="CONSTANT" 3160 >V4L2_EXPOSURE_MANUAL</CODE 3161 > </TD 3162 ><TD 3163 >Manual exposure time, manual iris.</TD 3164 ></TR 3165 ><TR 3166 ><TD 3167 ><CODE 3168 CLASS="CONSTANT" 3169 >V4L2_EXPOSURE_SHUTTER_PRIORITY</CODE 3170 > </TD 3171 ><TD 3172 >Manual exposure time, auto iris.</TD 3173 ></TR 3174 ><TR 3175 ><TD 3176 ><CODE 3177 CLASS="CONSTANT" 3178 >V4L2_EXPOSURE_APERTURE_PRIORITY</CODE 3179 > </TD 3180 ><TD 3181 >Auto exposure time, manual iris.</TD 3182 ></TR 3183 ></TBODY 3184 ></TABLE 3185 ></TD 3186 ></TR 3187 ><TR 3188 ><TD 3189 > </TD 3190 ><TD 3191 > </TD 3192 ><TD 3193 > </TD 3194 ><TD 3195 > </TD 3196 ></TR 3197 ><TR 3198 ><TD 3199 COLSPAN="2" 3200 ><CODE 3201 CLASS="CONSTANT" 3202 >V4L2_CID_EXPOSURE_ABSOLUTE</CODE 3203 > </TD 3204 ><TD 3205 >integer</TD 3206 ><TD 3207 > </TD 3208 ></TR 3209 ><TR 3210 ><TD 3211 > </TD 3212 ><TD 3213 COLSPAN="3" 3214 >Determines the exposure 3215 time of the camera sensor. The exposure time is limited by the frame 3216 interval. Drivers should interpret the values as 100 µs units, 3217 where the value 1 stands for 1/10000th of a second, 10000 for 1 second 3218 and 100000 for 10 seconds.</TD 3219 ></TR 3220 ><TR 3221 ><TD 3222 > </TD 3223 ><TD 3224 > </TD 3225 ><TD 3226 > </TD 3227 ><TD 3228 > </TD 3229 ></TR 3230 ><TR 3231 ><TD 3232 COLSPAN="2" 3233 ><CODE 3234 CLASS="CONSTANT" 3235 >V4L2_CID_EXPOSURE_AUTO_PRIORITY</CODE 3236 > </TD 3237 ><TD 3238 >boolean</TD 3239 ><TD 3240 > </TD 3241 ></TR 3242 ><TR 3243 ><TD 3244 > </TD 3245 ><TD 3246 COLSPAN="3" 3247 >When 3248 <CODE 3249 CLASS="CONSTANT" 3250 >V4L2_CID_EXPOSURE_AUTO</CODE 3251 > is set to 3252 <CODE 3253 CLASS="CONSTANT" 3254 >AUTO</CODE 3255 > or <CODE 3256 CLASS="CONSTANT" 3257 >SHUTTER_PRIORITY</CODE 3258 >, 3259 this control determines if the device may dynamically vary the frame 3260 rate. By default this feature is disabled (0) and the frame rate must 3261 remain constant.</TD 3262 ></TR 3263 ><TR 3264 ><TD 3265 > </TD 3266 ><TD 3267 > </TD 3268 ><TD 3269 > </TD 3270 ><TD 3271 > </TD 3272 ></TR 3273 ><TR 3274 ><TD 3275 COLSPAN="2" 3276 ><CODE 3277 CLASS="CONSTANT" 3278 >V4L2_CID_PAN_RELATIVE</CODE 3279 > </TD 3280 ><TD 3281 >integer</TD 3282 ><TD 3283 > </TD 3284 ></TR 3285 ><TR 3286 ><TD 3287 > </TD 3288 ><TD 3289 COLSPAN="3" 3290 >This control turns the 3291 camera horizontally by the specified amount. The unit is undefined. A 3292 positive value moves the camera to the right (clockwise when viewed 3293 from above), a negative value to the left. A value of zero does not 3294 cause motion.</TD 3295 ></TR 3296 ><TR 3297 ><TD 3298 > </TD 3299 ><TD 3300 > </TD 3301 ><TD 3302 > </TD 3303 ><TD 3304 > </TD 3305 ></TR 3306 ><TR 3307 ><TD 3308 COLSPAN="2" 3309 ><CODE 3310 CLASS="CONSTANT" 3311 >V4L2_CID_TILT_RELATIVE</CODE 3312 > </TD 3313 ><TD 3314 >integer</TD 3315 ><TD 3316 > </TD 3317 ></TR 3318 ><TR 3319 ><TD 3320 > </TD 3321 ><TD 3322 COLSPAN="3" 3323 >This control turns the 3324 camera vertically by the specified amount. The unit is undefined. A 3325 positive value moves the camera up, a negative value down. A value of 3326 zero does not cause motion.</TD 3327 ></TR 3328 ><TR 3329 ><TD 3330 > </TD 3331 ><TD 3332 > </TD 3333 ><TD 3334 > </TD 3335 ><TD 3336 > </TD 3337 ></TR 3338 ><TR 3339 ><TD 3340 COLSPAN="2" 3341 ><CODE 3342 CLASS="CONSTANT" 3343 >V4L2_CID_PAN_RESET</CODE 3344 > </TD 3345 ><TD 3346 >boolean</TD 3347 ><TD 3348 > </TD 3349 ></TR 3350 ><TR 3351 ><TD 3352 > </TD 3353 ><TD 3354 COLSPAN="3" 3355 >When this control is set 3356 to <CODE 3357 CLASS="CONSTANT" 3358 >TRUE</CODE 3359 > (1), the camera moves horizontally to the 3360 default position.</TD 3361 ></TR 3362 ><TR 3363 ><TD 3364 > </TD 3365 ><TD 3366 > </TD 3367 ><TD 3368 > </TD 3369 ><TD 3370 > </TD 3371 ></TR 3372 ><TR 3373 ><TD 3374 COLSPAN="2" 3375 ><CODE 3376 CLASS="CONSTANT" 3377 >V4L2_CID_TILT_RESET</CODE 3378 > </TD 3379 ><TD 3380 >boolean</TD 3381 ><TD 3382 > </TD 3383 ></TR 3384 ><TR 3385 ><TD 3386 > </TD 3387 ><TD 3388 COLSPAN="3" 3389 >When this control is set 3390 to <CODE 3391 CLASS="CONSTANT" 3392 >TRUE</CODE 3393 > (1), the camera moves vertically to the 3394 default position.</TD 3395 ></TR 3396 ><TR 3397 ><TD 3398 > </TD 3399 ><TD 3400 > </TD 3401 ><TD 3402 > </TD 3403 ><TD 3404 > </TD 3405 ></TR 3406 ><TR 3407 ><TD 3408 COLSPAN="2" 3409 ><CODE 3410 CLASS="CONSTANT" 3411 >V4L2_CID_PAN_ABSOLUTE</CODE 3412 > </TD 3413 ><TD 3414 >integer</TD 3415 ><TD 3416 > </TD 3417 ></TR 3418 ><TR 3419 ><TD 3420 > </TD 3421 ><TD 3422 COLSPAN="3" 3423 >This control 3424 turns the camera horizontally to the specified position. Positive 3425 values move the camera to the right (clockwise when viewed from above), 3426 negative values to the left. Drivers should interpret the values as arc 3427 seconds, with valid values between -180 * 3600 and +180 * 3600 3428 inclusive.</TD 3429 ></TR 3430 ><TR 3431 ><TD 3432 > </TD 3433 ><TD 3434 > </TD 3435 ><TD 3436 > </TD 3437 ><TD 3438 > </TD 3439 ></TR 3440 ><TR 3441 ><TD 3442 COLSPAN="2" 3443 ><CODE 3444 CLASS="CONSTANT" 3445 >V4L2_CID_TILT_ABSOLUTE</CODE 3446 > </TD 3447 ><TD 3448 >integer</TD 3449 ><TD 3450 > </TD 3451 ></TR 3452 ><TR 3453 ><TD 3454 > </TD 3455 ><TD 3456 COLSPAN="3" 3457 >This control 3458 turns the camera vertically to the specified position. Positive values 3459 move the camera up, negative values down. Drivers should interpret the 3460 values as arc seconds, with valid values between -180 * 3600 and +180 3461 * 3600 inclusive.</TD 3462 ></TR 3463 ><TR 3464 ><TD 3465 > </TD 3466 ><TD 3467 > </TD 3468 ><TD 3469 > </TD 3470 ><TD 3471 > </TD 3472 ></TR 3473 ><TR 3474 ><TD 3475 COLSPAN="2" 3476 ><CODE 3477 CLASS="CONSTANT" 3478 >V4L2_CID_FOCUS_ABSOLUTE</CODE 3479 > </TD 3480 ><TD 3481 >integer</TD 3482 ><TD 3483 > </TD 3484 ></TR 3485 ><TR 3486 ><TD 3487 > </TD 3488 ><TD 3489 COLSPAN="3" 3490 >This control sets the 3491 focal point of the camera to the specified position. The unit is 3492 undefined. Positive values set the focus closer to the camera, 3493 negative values towards infinity.</TD 3494 ></TR 3495 ><TR 3496 ><TD 3497 > </TD 3498 ><TD 3499 > </TD 3500 ><TD 3501 > </TD 3502 ><TD 3503 > </TD 3504 ></TR 3505 ><TR 3506 ><TD 3507 COLSPAN="2" 3508 ><CODE 3509 CLASS="CONSTANT" 3510 >V4L2_CID_FOCUS_RELATIVE</CODE 3511 > </TD 3512 ><TD 3513 >integer</TD 3514 ><TD 3515 > </TD 3516 ></TR 3517 ><TR 3518 ><TD 3519 > </TD 3520 ><TD 3521 COLSPAN="3" 3522 >This control moves the 3523 focal point of the camera by the specified amount. The unit is 3524 undefined. Positive values move the focus closer to the camera, 3525 negative values towards infinity.</TD 3526 ></TR 3527 ><TR 3528 ><TD 3529 > </TD 3530 ><TD 3531 > </TD 3532 ><TD 3533 > </TD 3534 ><TD 3535 > </TD 3536 ></TR 3537 ><TR 3538 ><TD 3539 COLSPAN="2" 3540 ><CODE 3541 CLASS="CONSTANT" 3542 >V4L2_CID_FOCUS_AUTO</CODE 3543 > </TD 3544 ><TD 3545 >boolean</TD 3546 ><TD 3547 > </TD 3548 ></TR 3549 ><TR 3550 ><TD 3551 > </TD 3552 ><TD 3553 COLSPAN="3" 3554 >Enables automatic focus 3555 adjustments. The effect of manual focus adjustments while this feature 3556 is enabled is undefined, drivers should ignore such requests.</TD 3557 ></TR 3558 ><TR 3559 ><TD 3560 > </TD 3561 ><TD 3562 > </TD 3563 ><TD 3564 > </TD 3565 ><TD 3566 > </TD 3567 ></TR 3568 ></TBODY 3569 ></TABLE 3570 ></DIV 3571 ></DIV 3572 ></DIV 3573 ><DIV 3574 CLASS="NAVFOOTER" 3575 ><HR 3576 ALIGN="LEFT" 3577 WIDTH="100%"><TABLE 3578 SUMMARY="Footer navigation table" 3579 WIDTH="100%" 3580 BORDER="0" 3581 CELLPADDING="0" 3582 CELLSPACING="0" 3583 ><TR 3584 ><TD 3585 WIDTH="33%" 3586 ALIGN="left" 3587 VALIGN="top" 3588 ><A 3589 HREF="x542.htm" 3590 ACCESSKEY="P" 3591 >Prev</A 3592 ></TD 3593 ><TD 3594 WIDTH="34%" 3595 ALIGN="center" 3596 VALIGN="top" 3597 ><A 3598 HREF="book1.htm" 3599 ACCESSKEY="H" 3600 >Home</A 3601 ></TD 3602 ><TD 3603 WIDTH="33%" 3604 ALIGN="right" 3605 VALIGN="top" 3606 ><A 3607 HREF="x1859.htm" 3608 ACCESSKEY="N" 3609 >Next</A 3610 ></TD 3611 ></TR 3612 ><TR 3613 ><TD 3614 WIDTH="33%" 3615 ALIGN="left" 3616 VALIGN="top" 3617 >User Controls</TD 3618 ><TD 3619 WIDTH="34%" 3620 ALIGN="center" 3621 VALIGN="top" 3622 ><A 3623 HREF="c174.htm" 3624 ACCESSKEY="U" 3625 >Up</A 3626 ></TD 3627 ><TD 3628 WIDTH="33%" 3629 ALIGN="right" 3630 VALIGN="top" 3631 >Data Formats</TD 3632 ></TR 3633 ></TABLE 3634 ></DIV 3635 ></BODY 3636 ></HTML 3637 > 3638
