projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
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| 8e080c2e MCC |
1 | <section id="control"> |
| 2 | <title>User Controls</title> | |
| 3 | ||
| 4 | <para>Devices typically have a number of user-settable controls | |
| 5 | such as brightness, saturation and so on, which would be presented to | |
| 6 | the user on a graphical user interface. But, different devices | |
| 7 | will have different controls available, and furthermore, the range of | |
| 8 | possible values, and the default value will vary from device to | |
| 9 | device. The control ioctls provide the information and a mechanism to | |
| 10 | create a nice user interface for these controls that will work | |
| 11 | correctly with any device.</para> | |
| 12 | ||
| 13 | <para>All controls are accessed using an ID value. V4L2 defines | |
| 14 | several IDs for specific purposes. Drivers can also implement their | |
| 15 | own custom controls using <constant>V4L2_CID_PRIVATE_BASE</constant> | |
| 16 | and higher values. The pre-defined control IDs have the prefix | |
| 17 | <constant>V4L2_CID_</constant>, and are listed in <xref | |
| 18 | linkend="control-id" />. The ID is used when querying the attributes of | |
| 19 | a control, and when getting or setting the current value.</para> | |
| 20 | ||
| 21 | <para>Generally applications should present controls to the user | |
| 22 | without assumptions about their purpose. Each control comes with a | |
| 23 | name string the user is supposed to understand. When the purpose is | |
| 24 | non-intuitive the driver writer should provide a user manual, a user | |
| 25 | interface plug-in or a driver specific panel application. Predefined | |
| 26 | IDs were introduced to change a few controls programmatically, for | |
| 27 | example to mute a device during a channel switch.</para> | |
| 28 | ||
| 29 | <para>Drivers may enumerate different controls after switching | |
| 30 | the current video input or output, tuner or modulator, or audio input | |
| 31 | or output. Different in the sense of other bounds, another default and | |
| 32 | current value, step size or other menu items. A control with a certain | |
| 33 | <emphasis>custom</emphasis> ID can also change name and | |
| 34 | type.<footnote> | |
| 35 | <para>It will be more convenient for applications if drivers | |
| 36 | make use of the <constant>V4L2_CTRL_FLAG_DISABLED</constant> flag, but | |
| 37 | that was never required.</para> | |
| 38 | </footnote> Control values are stored globally, they do not | |
| 39 | change when switching except to stay within the reported bounds. They | |
| 40 | also do not change ⪚ when the device is opened or closed, when the | |
| 41 | tuner radio frequency is changed or generally never without | |
| 42 | application request. Since V4L2 specifies no event mechanism, panel | |
| 43 | applications intended to cooperate with other panel applications (be | |
| 44 | they built into a larger application, as a TV viewer) may need to | |
| 45 | regularly poll control values to update their user | |
| 46 | interface.<footnote> | |
| 47 | <para>Applications could call an ioctl to request events. | |
| 48 | After another process called &VIDIOC-S-CTRL; or another ioctl changing | |
| 49 | shared properties the &func-select; function would indicate | |
| 50 | readability until any ioctl (querying the properties) is | |
| 51 | called.</para> | |
| 52 | </footnote></para> | |
| 53 | ||
| 0f427218 SA |
54 | <para> |
| 55 | All controls use machine endianness. | |
| 56 | </para> | |
| 57 | ||
| 8e080c2e MCC |
58 | <table pgwide="1" frame="none" id="control-id"> |
| 59 | <title>Control IDs</title> | |
| 60 | <tgroup cols="3"> | |
| 61 | &cs-def; | |
| 62 | <thead> | |
| 63 | <row> | |
| 64 | <entry>ID</entry> | |
| 65 | <entry>Type</entry> | |
| 66 | <entry>Description</entry> | |
| 67 | </row> | |
| 68 | </thead> | |
| 69 | <tbody valign="top"> | |
| 70 | <row> | |
| 71 | <entry><constant>V4L2_CID_BASE</constant></entry> | |
| 72 | <entry></entry> | |
| 73 | <entry>First predefined ID, equal to | |
| 74 | <constant>V4L2_CID_BRIGHTNESS</constant>.</entry> | |
| 75 | </row> | |
| 76 | <row> | |
| 77 | <entry><constant>V4L2_CID_USER_BASE</constant></entry> | |
| 78 | <entry></entry> | |
| 79 | <entry>Synonym of <constant>V4L2_CID_BASE</constant>.</entry> | |
| 80 | </row> | |
| 81 | <row> | |
| 82 | <entry><constant>V4L2_CID_BRIGHTNESS</constant></entry> | |
| 83 | <entry>integer</entry> | |
| 84 | <entry>Picture brightness, or more precisely, the black | |
| 85 | level.</entry> | |
| 86 | </row> | |
| 87 | <row> | |
| 88 | <entry><constant>V4L2_CID_CONTRAST</constant></entry> | |
| 89 | <entry>integer</entry> | |
| 90 | <entry>Picture contrast or luma gain.</entry> | |
| 91 | </row> | |
| 92 | <row> | |
| 93 | <entry><constant>V4L2_CID_SATURATION</constant></entry> | |
| 94 | <entry>integer</entry> | |
| 95 | <entry>Picture color saturation or chroma gain.</entry> | |
| 96 | </row> | |
| 97 | <row> | |
| 98 | <entry><constant>V4L2_CID_HUE</constant></entry> | |
| 99 | <entry>integer</entry> | |
| 100 | <entry>Hue or color balance.</entry> | |
| 101 | </row> | |
| 102 | <row> | |
| 103 | <entry><constant>V4L2_CID_AUDIO_VOLUME</constant></entry> | |
| 104 | <entry>integer</entry> | |
| 105 | <entry>Overall audio volume. Note some drivers also | |
| 106 | provide an OSS or ALSA mixer interface.</entry> | |
| 107 | </row> | |
| 108 | <row> | |
| 109 | <entry><constant>V4L2_CID_AUDIO_BALANCE</constant></entry> | |
| 110 | <entry>integer</entry> | |
| 111 | <entry>Audio stereo balance. Minimum corresponds to all | |
| 112 | the way left, maximum to right.</entry> | |
| 113 | </row> | |
| 114 | <row> | |
| 115 | <entry><constant>V4L2_CID_AUDIO_BASS</constant></entry> | |
| 116 | <entry>integer</entry> | |
| 117 | <entry>Audio bass adjustment.</entry> | |
| 118 | </row> | |
| 119 | <row> | |
| 120 | <entry><constant>V4L2_CID_AUDIO_TREBLE</constant></entry> | |
| 121 | <entry>integer</entry> | |
| 122 | <entry>Audio treble adjustment.</entry> | |
| 123 | </row> | |
| 124 | <row> | |
| 125 | <entry><constant>V4L2_CID_AUDIO_MUTE</constant></entry> | |
| 126 | <entry>boolean</entry> | |
| 127 | <entry>Mute audio, &ie; set the volume to zero, however | |
| 128 | without affecting <constant>V4L2_CID_AUDIO_VOLUME</constant>. Like | |
| 129 | ALSA drivers, V4L2 drivers must mute at load time to avoid excessive | |
| 130 | noise. Actually the entire device should be reset to a low power | |
| 131 | consumption state.</entry> | |
| 132 | </row> | |
| 133 | <row> | |
| 134 | <entry><constant>V4L2_CID_AUDIO_LOUDNESS</constant></entry> | |
| 135 | <entry>boolean</entry> | |
| 136 | <entry>Loudness mode (bass boost).</entry> | |
| 137 | </row> | |
| 138 | <row> | |
| 139 | <entry><constant>V4L2_CID_BLACK_LEVEL</constant></entry> | |
| 140 | <entry>integer</entry> | |
| 141 | <entry>Another name for brightness (not a synonym of | |
| 142 | <constant>V4L2_CID_BRIGHTNESS</constant>). This control is deprecated | |
| 143 | and should not be used in new drivers and applications.</entry> | |
| 144 | </row> | |
| 145 | <row> | |
| 146 | <entry><constant>V4L2_CID_AUTO_WHITE_BALANCE</constant></entry> | |
| 147 | <entry>boolean</entry> | |
| 148 | <entry>Automatic white balance (cameras).</entry> | |
| 149 | </row> | |
| 150 | <row> | |
| 151 | <entry><constant>V4L2_CID_DO_WHITE_BALANCE</constant></entry> | |
| 152 | <entry>button</entry> | |
| 153 | <entry>This is an action control. When set (the value is | |
| 154 | ignored), the device will do a white balance and then hold the current | |
| 155 | setting. Contrast this with the boolean | |
| 156 | <constant>V4L2_CID_AUTO_WHITE_BALANCE</constant>, which, when | |
| 157 | activated, keeps adjusting the white balance.</entry> | |
| 158 | </row> | |
| 159 | <row> | |
| 160 | <entry><constant>V4L2_CID_RED_BALANCE</constant></entry> | |
| 161 | <entry>integer</entry> | |
| 162 | <entry>Red chroma balance.</entry> | |
| 163 | </row> | |
| 164 | <row> | |
| 165 | <entry><constant>V4L2_CID_BLUE_BALANCE</constant></entry> | |
| 166 | <entry>integer</entry> | |
| 167 | <entry>Blue chroma balance.</entry> | |
| 168 | </row> | |
| 169 | <row> | |
| 170 | <entry><constant>V4L2_CID_GAMMA</constant></entry> | |
| 171 | <entry>integer</entry> | |
| 172 | <entry>Gamma adjust.</entry> | |
| 173 | </row> | |
| 174 | <row> | |
| 175 | <entry><constant>V4L2_CID_WHITENESS</constant></entry> | |
| 176 | <entry>integer</entry> | |
| 177 | <entry>Whiteness for grey-scale devices. This is a synonym | |
| 178 | for <constant>V4L2_CID_GAMMA</constant>. This control is deprecated | |
| 179 | and should not be used in new drivers and applications.</entry> | |
| 180 | </row> | |
| 181 | <row> | |
| 182 | <entry><constant>V4L2_CID_EXPOSURE</constant></entry> | |
| 183 | <entry>integer</entry> | |
| 184 | <entry>Exposure (cameras). [Unit?]</entry> | |
| 185 | </row> | |
| 186 | <row> | |
| 187 | <entry><constant>V4L2_CID_AUTOGAIN</constant></entry> | |
| 188 | <entry>boolean</entry> | |
| 189 | <entry>Automatic gain/exposure control.</entry> | |
| 190 | </row> | |
| 191 | <row> | |
| 192 | <entry><constant>V4L2_CID_GAIN</constant></entry> | |
| 193 | <entry>integer</entry> | |
| 194 | <entry>Gain control.</entry> | |
| 195 | </row> | |
| 196 | <row> | |
| 197 | <entry><constant>V4L2_CID_HFLIP</constant></entry> | |
| 198 | <entry>boolean</entry> | |
| 199 | <entry>Mirror the picture horizontally.</entry> | |
| 200 | </row> | |
| 201 | <row> | |
| 202 | <entry><constant>V4L2_CID_VFLIP</constant></entry> | |
| 203 | <entry>boolean</entry> | |
| 204 | <entry>Mirror the picture vertically.</entry> | |
| 205 | </row> | |
| 8e080c2e MCC |
206 | <row id="v4l2-power-line-frequency"> |
| 207 | <entry><constant>V4L2_CID_POWER_LINE_FREQUENCY</constant></entry> | |
| 208 | <entry>enum</entry> | |
| 209 | <entry>Enables a power line frequency filter to avoid | |
| 210 | flicker. Possible values for <constant>enum v4l2_power_line_frequency</constant> are: | |
| 211 | <constant>V4L2_CID_POWER_LINE_FREQUENCY_DISABLED</constant> (0), | |
| d26a6635 SN |
212 | <constant>V4L2_CID_POWER_LINE_FREQUENCY_50HZ</constant> (1), |
| 213 | <constant>V4L2_CID_POWER_LINE_FREQUENCY_60HZ</constant> (2) and | |
| 214 | <constant>V4L2_CID_POWER_LINE_FREQUENCY_AUTO</constant> (3).</entry> | |
| 8e080c2e MCC |
215 | </row> |
| 216 | <row> | |
| 217 | <entry><constant>V4L2_CID_HUE_AUTO</constant></entry> | |
| 218 | <entry>boolean</entry> | |
| 219 | <entry>Enables automatic hue control by the device. The | |
| 220 | effect of setting <constant>V4L2_CID_HUE</constant> while automatic | |
| 221 | hue control is enabled is undefined, drivers should ignore such | |
| 222 | request.</entry> | |
| 223 | </row> | |
| 224 | <row> | |
| 225 | <entry><constant>V4L2_CID_WHITE_BALANCE_TEMPERATURE</constant></entry> | |
| 226 | <entry>integer</entry> | |
| 227 | <entry>This control specifies the white balance settings | |
| 228 | as a color temperature in Kelvin. A driver should have a minimum of | |
| 229 | 2800 (incandescent) to 6500 (daylight). For more information about | |
| 230 | color temperature see <ulink | |
| 231 | url="http://en.wikipedia.org/wiki/Color_temperature">Wikipedia</ulink>.</entry> | |
| 232 | </row> | |
| 233 | <row> | |
| 234 | <entry><constant>V4L2_CID_SHARPNESS</constant></entry> | |
| 235 | <entry>integer</entry> | |
| 236 | <entry>Adjusts the sharpness filters in a camera. The | |
| 237 | minimum value disables the filters, higher values give a sharper | |
| 238 | picture.</entry> | |
| 239 | </row> | |
| 240 | <row> | |
| 241 | <entry><constant>V4L2_CID_BACKLIGHT_COMPENSATION</constant></entry> | |
| 242 | <entry>integer</entry> | |
| 243 | <entry>Adjusts the backlight compensation in a camera. The | |
| 244 | minimum value disables backlight compensation.</entry> | |
| 245 | </row> | |
| 246 | <row> | |
| 247 | <entry><constant>V4L2_CID_CHROMA_AGC</constant></entry> | |
| 248 | <entry>boolean</entry> | |
| 249 | <entry>Chroma automatic gain control.</entry> | |
| 250 | </row> | |
| 7a01f6db DH |
251 | <row> |
| 252 | <entry><constant>V4L2_CID_CHROMA_GAIN</constant></entry> | |
| 253 | <entry>integer</entry> | |
| 254 | <entry>Adjusts the Chroma gain control (for use when chroma AGC | |
| 255 | is disabled).</entry> | |
| 256 | </row> | |
| 8e080c2e MCC |
257 | <row> |
| 258 | <entry><constant>V4L2_CID_COLOR_KILLER</constant></entry> | |
| 259 | <entry>boolean</entry> | |
| 260 | <entry>Enable the color killer (&ie; force a black & white image in case of a weak video signal).</entry> | |
| 261 | </row> | |
| 262 | <row id="v4l2-colorfx"> | |
| 263 | <entry><constant>V4L2_CID_COLORFX</constant></entry> | |
| 264 | <entry>enum</entry> | |
| 6491d1ad SN |
265 | <entry>Selects a color effect. The following values are defined: |
| 266 | </entry> | |
| 267 | </row><row> | |
| 268 | <entry></entry> | |
| 269 | <entry></entry> | |
| 270 | <entrytbl spanname="descr" cols="2"> | |
| 271 | <tbody valign="top"> | |
| 272 | <row> | |
| 273 | <entry><constant>V4L2_COLORFX_NONE</constant> </entry> | |
| 274 | <entry>Color effect is disabled.</entry> | |
| 275 | </row> | |
| 276 | <row> | |
| 277 | <entry><constant>V4L2_COLORFX_ANTIQUE</constant> </entry> | |
| 278 | <entry>An aging (old photo) effect.</entry> | |
| 279 | </row> | |
| 280 | <row> | |
| 281 | <entry><constant>V4L2_COLORFX_ART_FREEZE</constant> </entry> | |
| 282 | <entry>Frost color effect.</entry> | |
| 283 | </row> | |
| 284 | <row> | |
| 285 | <entry><constant>V4L2_COLORFX_AQUA</constant> </entry> | |
| 286 | <entry>Water color, cool tone.</entry> | |
| 287 | </row> | |
| 288 | <row> | |
| 289 | <entry><constant>V4L2_COLORFX_BW</constant> </entry> | |
| 290 | <entry>Black and white.</entry> | |
| 291 | </row> | |
| 292 | <row> | |
| 293 | <entry><constant>V4L2_COLORFX_EMBOSS</constant> </entry> | |
| 294 | <entry>Emboss, the highlights and shadows replace light/dark boundaries | |
| 295 | and low contrast areas are set to a gray background.</entry> | |
| 296 | </row> | |
| 297 | <row> | |
| 298 | <entry><constant>V4L2_COLORFX_GRASS_GREEN</constant> </entry> | |
| 299 | <entry>Grass green.</entry> | |
| 300 | </row> | |
| 301 | <row> | |
| 302 | <entry><constant>V4L2_COLORFX_NEGATIVE</constant> </entry> | |
| 303 | <entry>Negative.</entry> | |
| 304 | </row> | |
| 305 | <row> | |
| 306 | <entry><constant>V4L2_COLORFX_SEPIA</constant> </entry> | |
| 307 | <entry>Sepia tone.</entry> | |
| 308 | </row> | |
| 309 | <row> | |
| 310 | <entry><constant>V4L2_COLORFX_SKETCH</constant> </entry> | |
| 311 | <entry>Sketch.</entry> | |
| 312 | </row> | |
| 313 | <row> | |
| 314 | <entry><constant>V4L2_COLORFX_SKIN_WHITEN</constant> </entry> | |
| 315 | <entry>Skin whiten.</entry> | |
| 316 | </row> | |
| 317 | <row> | |
| 318 | <entry><constant>V4L2_COLORFX_SKY_BLUE</constant> </entry> | |
| 319 | <entry>Sky blue.</entry> | |
| 320 | </row> | |
| 321 | <row> | |
| 322 | <entry><constant>V4L2_COLORFX_SOLARIZATION</constant> </entry> | |
| 323 | <entry>Solarization, the image is partially reversed in tone, | |
| 324 | only color values above or below a certain threshold are inverted. | |
| 325 | </entry> | |
| 326 | </row> | |
| 327 | <row> | |
| 328 | <entry><constant>V4L2_COLORFX_SILHOUETTE</constant> </entry> | |
| 329 | <entry>Silhouette (outline).</entry> | |
| 330 | </row> | |
| 331 | <row> | |
| 332 | <entry><constant>V4L2_COLORFX_VIVID</constant> </entry> | |
| 333 | <entry>Vivid colors.</entry> | |
| 334 | </row> | |
| 335 | <row> | |
| 336 | <entry><constant>V4L2_COLORFX_SET_CBCR</constant> </entry> | |
| 337 | <entry>The Cb and Cr chroma components are replaced by fixed | |
| 338 | coefficients determined by <constant>V4L2_CID_COLORFX_CBCR</constant> | |
| 339 | control.</entry> | |
| 340 | </row> | |
| 341 | </tbody> | |
| 342 | </entrytbl> | |
| 343 | </row> | |
| 344 | <row> | |
| 345 | <entry><constant>V4L2_CID_COLORFX_CBCR</constant></entry> | |
| 346 | <entry>integer</entry> | |
| 347 | <entry>Determines the Cb and Cr coefficients for <constant>V4L2_COLORFX_SET_CBCR</constant> | |
| 348 | color effect. Bits [7:0] of the supplied 32 bit value are interpreted as | |
| 349 | Cr component, bits [15:8] as Cb component and bits [31:16] must be zero. | |
| 350 | </entry> | |
| 8e080c2e | 351 | </row> |
| a2f8b84f HG |
352 | <row> |
| 353 | <entry><constant>V4L2_CID_AUTOBRIGHTNESS</constant></entry> | |
| 354 | <entry>boolean</entry> | |
| 355 | <entry>Enable Automatic Brightness.</entry> | |
| 356 | </row> | |
| bd977801 VH |
357 | <row> |
| 358 | <entry><constant>V4L2_CID_ROTATE</constant></entry> | |
| 359 | <entry>integer</entry> | |
| 360 | <entry>Rotates the image by specified angle. Common angles are 90, | |
| 361 | 270 and 180. Rotating the image to 90 and 270 will reverse the height | |
| 362 | and width of the display window. It is necessary to set the new height and | |
| 363 | width of the picture using the &VIDIOC-S-FMT; ioctl according to | |
| 364 | the rotation angle selected.</entry> | |
| 365 | </row> | |
| 366 | <row> | |
| 367 | <entry><constant>V4L2_CID_BG_COLOR</constant></entry> | |
| 368 | <entry>integer</entry> | |
| 369 | <entry>Sets the background color on the current output device. | |
| 370 | Background color needs to be specified in the RGB24 format. The | |
| 371 | supplied 32 bit value is interpreted as bits 0-7 Red color information, | |
| 372 | bits 8-15 Green color information, bits 16-23 Blue color | |
| 373 | information and bits 24-31 must be zero.</entry> | |
| 374 | </row> | |
| 008d35f2 JFM |
375 | <row> |
| 376 | <entry><constant>V4L2_CID_ILLUMINATORS_1</constant> | |
| 377 | <constant>V4L2_CID_ILLUMINATORS_2</constant></entry> | |
| 378 | <entry>boolean</entry> | |
| 379 | <entry>Switch on or off the illuminator 1 or 2 of the device | |
| 380 | (usually a microscope).</entry> | |
| 381 | </row> | |
| e65e4f13 KD |
382 | <row> |
| 383 | <entry><constant>V4L2_CID_MIN_BUFFERS_FOR_CAPTURE</constant></entry> | |
| 384 | <entry>integer</entry> | |
| 385 | <entry>This is a read-only control that can be read by the application | |
| 386 | and used as a hint to determine the number of CAPTURE buffers to pass to REQBUFS. | |
| 387 | The value is the minimum number of CAPTURE buffers that is necessary for hardware | |
| 388 | to work.</entry> | |
| 389 | </row> | |
| 390 | <row> | |
| 391 | <entry><constant>V4L2_CID_MIN_BUFFERS_FOR_OUTPUT</constant></entry> | |
| 392 | <entry>integer</entry> | |
| 393 | <entry>This is a read-only control that can be read by the application | |
| 394 | and used as a hint to determine the number of OUTPUT buffers to pass to REQBUFS. | |
| 395 | The value is the minimum number of OUTPUT buffers that is necessary for hardware | |
| 396 | to work.</entry> | |
| 8e080c2e | 397 | </row> |
| cc1d3272 SN |
398 | <row id="v4l2-alpha-component"> |
| 399 | <entry><constant>V4L2_CID_ALPHA_COMPONENT</constant></entry> | |
| 400 | <entry>integer</entry> | |
| 401 | <entry> Sets the alpha color component on the capture device or on | |
| 402 | the capture buffer queue of a mem-to-mem device. When a mem-to-mem | |
| 403 | device produces frame format that includes an alpha component | |
| 404 | (e.g. <link linkend="rgb-formats">packed RGB image formats</link>) | |
| 405 | and the alpha value is not defined by the mem-to-mem input data | |
| 406 | this control lets you select the alpha component value of all | |
| 407 | pixels. It is applicable to any pixel format that contains an alpha | |
| 408 | component. | |
| 409 | </entry> | |
| 410 | </row> | |
| 411 | <row> | |
| 412 | <entry><constant>V4L2_CID_LASTP1</constant></entry> | |
| 413 | <entry></entry> | |
| 414 | <entry>End of the predefined control IDs (currently | |
| 415 | <constant>V4L2_CID_ALPHA_COMPONENT</constant> + 1).</entry> | |
| 416 | </row> | |
| 8e080c2e MCC |
417 | <row> |
| 418 | <entry><constant>V4L2_CID_PRIVATE_BASE</constant></entry> | |
| 419 | <entry></entry> | |
| 420 | <entry>ID of the first custom (driver specific) control. | |
| 421 | Applications depending on particular custom controls should check the | |
| 422 | driver name and version, see <xref linkend="querycap" />.</entry> | |
| 423 | </row> | |
| 424 | </tbody> | |
| 425 | </tgroup> | |
| 426 | </table> | |
| 427 | ||
| 428 | <para>Applications can enumerate the available controls with the | |
| 429 | &VIDIOC-QUERYCTRL; and &VIDIOC-QUERYMENU; ioctls, get and set a | |
| 430 | control value with the &VIDIOC-G-CTRL; and &VIDIOC-S-CTRL; ioctls. | |
| 431 | Drivers must implement <constant>VIDIOC_QUERYCTRL</constant>, | |
| 432 | <constant>VIDIOC_G_CTRL</constant> and | |
| 433 | <constant>VIDIOC_S_CTRL</constant> when the device has one or more | |
| 434 | controls, <constant>VIDIOC_QUERYMENU</constant> when it has one or | |
| 435 | more menu type controls.</para> | |
| 436 | ||
| 437 | <example> | |
| 438 | <title>Enumerating all controls</title> | |
| 439 | ||
| 440 | <programlisting> | |
| 441 | &v4l2-queryctrl; queryctrl; | |
| 442 | &v4l2-querymenu; querymenu; | |
| 443 | ||
| 444 | static void | |
| 445 | enumerate_menu (void) | |
| 446 | { | |
| 447 | printf (" Menu items:\n"); | |
| 448 | ||
| 449 | memset (&querymenu, 0, sizeof (querymenu)); | |
| 450 | querymenu.id = queryctrl.id; | |
| 451 | ||
| 452 | for (querymenu.index = queryctrl.minimum; | |
| 453 | querymenu.index <= queryctrl.maximum; | |
| 454 | querymenu.index++) { | |
| 455 | if (0 == ioctl (fd, &VIDIOC-QUERYMENU;, &querymenu)) { | |
| 456 | printf (" %s\n", querymenu.name); | |
| 8e080c2e MCC |
457 | } |
| 458 | } | |
| 459 | } | |
| 460 | ||
| 461 | memset (&queryctrl, 0, sizeof (queryctrl)); | |
| 462 | ||
| 463 | for (queryctrl.id = V4L2_CID_BASE; | |
| 464 | queryctrl.id < V4L2_CID_LASTP1; | |
| 465 | queryctrl.id++) { | |
| 466 | if (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) { | |
| 467 | if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED) | |
| 468 | continue; | |
| 469 | ||
| 470 | printf ("Control %s\n", queryctrl.name); | |
| 471 | ||
| 472 | if (queryctrl.type == V4L2_CTRL_TYPE_MENU) | |
| 473 | enumerate_menu (); | |
| 474 | } else { | |
| 475 | if (errno == EINVAL) | |
| 476 | continue; | |
| 477 | ||
| 478 | perror ("VIDIOC_QUERYCTRL"); | |
| 479 | exit (EXIT_FAILURE); | |
| 480 | } | |
| 481 | } | |
| 482 | ||
| 483 | for (queryctrl.id = V4L2_CID_PRIVATE_BASE;; | |
| 484 | queryctrl.id++) { | |
| 485 | if (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) { | |
| 486 | if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED) | |
| 487 | continue; | |
| 488 | ||
| 489 | printf ("Control %s\n", queryctrl.name); | |
| 490 | ||
| 491 | if (queryctrl.type == V4L2_CTRL_TYPE_MENU) | |
| 492 | enumerate_menu (); | |
| 493 | } else { | |
| 494 | if (errno == EINVAL) | |
| 495 | break; | |
| 496 | ||
| 497 | perror ("VIDIOC_QUERYCTRL"); | |
| 498 | exit (EXIT_FAILURE); | |
| 499 | } | |
| 500 | } | |
| 501 | </programlisting> | |
| 502 | </example> | |
| 503 | ||
| 504 | <example> | |
| 505 | <title>Changing controls</title> | |
| 506 | ||
| 507 | <programlisting> | |
| 508 | &v4l2-queryctrl; queryctrl; | |
| 509 | &v4l2-control; control; | |
| 510 | ||
| 511 | memset (&queryctrl, 0, sizeof (queryctrl)); | |
| 512 | queryctrl.id = V4L2_CID_BRIGHTNESS; | |
| 513 | ||
| 514 | if (-1 == ioctl (fd, &VIDIOC-QUERYCTRL;, &queryctrl)) { | |
| 515 | if (errno != EINVAL) { | |
| 516 | perror ("VIDIOC_QUERYCTRL"); | |
| 517 | exit (EXIT_FAILURE); | |
| 518 | } else { | |
| 519 | printf ("V4L2_CID_BRIGHTNESS is not supported\n"); | |
| 520 | } | |
| 521 | } else if (queryctrl.flags & V4L2_CTRL_FLAG_DISABLED) { | |
| 522 | printf ("V4L2_CID_BRIGHTNESS is not supported\n"); | |
| 523 | } else { | |
| 524 | memset (&control, 0, sizeof (control)); | |
| 525 | control.id = V4L2_CID_BRIGHTNESS; | |
| 526 | control.value = queryctrl.default_value; | |
| 527 | ||
| 528 | if (-1 == ioctl (fd, &VIDIOC-S-CTRL;, &control)) { | |
| 529 | perror ("VIDIOC_S_CTRL"); | |
| 530 | exit (EXIT_FAILURE); | |
| 531 | } | |
| 532 | } | |
| 533 | ||
| 534 | memset (&control, 0, sizeof (control)); | |
| 535 | control.id = V4L2_CID_CONTRAST; | |
| 536 | ||
| 537 | if (0 == ioctl (fd, &VIDIOC-G-CTRL;, &control)) { | |
| 538 | control.value += 1; | |
| 539 | ||
| 540 | /* The driver may clamp the value or return ERANGE, ignored here */ | |
| 541 | ||
| 542 | if (-1 == ioctl (fd, &VIDIOC-S-CTRL;, &control) | |
| 543 | && errno != ERANGE) { | |
| 544 | perror ("VIDIOC_S_CTRL"); | |
| 545 | exit (EXIT_FAILURE); | |
| 546 | } | |
| 547 | /* Ignore if V4L2_CID_CONTRAST is unsupported */ | |
| 548 | } else if (errno != EINVAL) { | |
| 549 | perror ("VIDIOC_G_CTRL"); | |
| 550 | exit (EXIT_FAILURE); | |
| 551 | } | |
| 552 | ||
| 553 | control.id = V4L2_CID_AUDIO_MUTE; | |
| 554 | control.value = TRUE; /* silence */ | |
| 555 | ||
| 556 | /* Errors ignored */ | |
| 557 | ioctl (fd, VIDIOC_S_CTRL, &control); | |
| 558 | </programlisting> | |
| 559 | </example> | |
| 560 | </section> | |
| 561 | ||
| 562 | <section id="extended-controls"> | |
| 563 | <title>Extended Controls</title> | |
| 564 | ||
| 565 | <section> | |
| 566 | <title>Introduction</title> | |
| 567 | ||
| 568 | <para>The control mechanism as originally designed was meant | |
| 569 | to be used for user settings (brightness, saturation, etc). However, | |
| 570 | it turned out to be a very useful model for implementing more | |
| 571 | complicated driver APIs where each driver implements only a subset of | |
| 572 | a larger API.</para> | |
| 573 | ||
| 574 | <para>The MPEG encoding API was the driving force behind | |
| 575 | designing and implementing this extended control mechanism: the MPEG | |
| 576 | standard is quite large and the currently supported hardware MPEG | |
| 577 | encoders each only implement a subset of this standard. Further more, | |
| 578 | many parameters relating to how the video is encoded into an MPEG | |
| 579 | stream are specific to the MPEG encoding chip since the MPEG standard | |
| 580 | only defines the format of the resulting MPEG stream, not how the | |
| 581 | video is actually encoded into that format.</para> | |
| 582 | ||
| 583 | <para>Unfortunately, the original control API lacked some | |
| 584 | features needed for these new uses and so it was extended into the | |
| 585 | (not terribly originally named) extended control API.</para> | |
| 586 | ||
| 587 | <para>Even though the MPEG encoding API was the first effort | |
| 588 | to use the Extended Control API, nowadays there are also other classes | |
| 589 | of Extended Controls, such as Camera Controls and FM Transmitter Controls. | |
| 590 | The Extended Controls API as well as all Extended Controls classes are | |
| 591 | described in the following text.</para> | |
| 592 | </section> | |
| 593 | ||
| 594 | <section> | |
| 595 | <title>The Extended Control API</title> | |
| 596 | ||
| 597 | <para>Three new ioctls are available: &VIDIOC-G-EXT-CTRLS;, | |
| 598 | &VIDIOC-S-EXT-CTRLS; and &VIDIOC-TRY-EXT-CTRLS;. These ioctls act on | |
| 599 | arrays of controls (as opposed to the &VIDIOC-G-CTRL; and | |
| 600 | &VIDIOC-S-CTRL; ioctls that act on a single control). This is needed | |
| 601 | since it is often required to atomically change several controls at | |
| 602 | once.</para> | |
| 603 | ||
| 604 | <para>Each of the new ioctls expects a pointer to a | |
| 605 | &v4l2-ext-controls;. This structure contains a pointer to the control | |
| 606 | array, a count of the number of controls in that array and a control | |
| 607 | class. Control classes are used to group similar controls into a | |
| 608 | single class. For example, control class | |
| 609 | <constant>V4L2_CTRL_CLASS_USER</constant> contains all user controls | |
| 610 | (&ie; all controls that can also be set using the old | |
| 611 | <constant>VIDIOC_S_CTRL</constant> ioctl). Control class | |
| 612 | <constant>V4L2_CTRL_CLASS_MPEG</constant> contains all controls | |
| 613 | relating to MPEG encoding, etc.</para> | |
| 614 | ||
| 615 | <para>All controls in the control array must belong to the | |
| 616 | specified control class. An error is returned if this is not the | |
| 617 | case.</para> | |
| 618 | ||
| 619 | <para>It is also possible to use an empty control array (count | |
| 620 | == 0) to check whether the specified control class is | |
| 621 | supported.</para> | |
| 622 | ||
| 623 | <para>The control array is a &v4l2-ext-control; array. The | |
| 624 | <structname>v4l2_ext_control</structname> structure is very similar to | |
| 625 | &v4l2-control;, except for the fact that it also allows for 64-bit | |
| 626 | values and pointers to be passed.</para> | |
| 627 | ||
| 628 | <para>It is important to realize that due to the flexibility of | |
| 629 | controls it is necessary to check whether the control you want to set | |
| 630 | actually is supported in the driver and what the valid range of values | |
| 631 | is. So use the &VIDIOC-QUERYCTRL; and &VIDIOC-QUERYMENU; ioctls to | |
| 632 | check this. Also note that it is possible that some of the menu | |
| 633 | indices in a control of type <constant>V4L2_CTRL_TYPE_MENU</constant> | |
| 634 | may not be supported (<constant>VIDIOC_QUERYMENU</constant> will | |
| 635 | return an error). A good example is the list of supported MPEG audio | |
| 636 | bitrates. Some drivers only support one or two bitrates, others | |
| 637 | support a wider range.</para> | |
| 0f427218 SA |
638 | |
| 639 | <para> | |
| 640 | All controls use machine endianness. | |
| 641 | </para> | |
| 8e080c2e MCC |
642 | </section> |
| 643 | ||
| 644 | <section> | |
| 645 | <title>Enumerating Extended Controls</title> | |
| 646 | ||
| 647 | <para>The recommended way to enumerate over the extended | |
| 648 | controls is by using &VIDIOC-QUERYCTRL; in combination with the | |
| 649 | <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> flag:</para> | |
| 650 | ||
| 651 | <informalexample> | |
| 652 | <programlisting> | |
| 653 | &v4l2-queryctrl; qctrl; | |
| 654 | ||
| 655 | qctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL; | |
| 656 | while (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &qctrl)) { | |
| 657 | /* ... */ | |
| 658 | qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL; | |
| 659 | } | |
| 660 | </programlisting> | |
| 661 | </informalexample> | |
| 662 | ||
| 663 | <para>The initial control ID is set to 0 ORed with the | |
| 664 | <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant> flag. The | |
| 665 | <constant>VIDIOC_QUERYCTRL</constant> ioctl will return the first | |
| 666 | control with a higher ID than the specified one. When no such controls | |
| 667 | are found an error is returned.</para> | |
| 668 | ||
| 669 | <para>If you want to get all controls within a specific control | |
| 670 | class, then you can set the initial | |
| 671 | <structfield>qctrl.id</structfield> value to the control class and add | |
| 672 | an extra check to break out of the loop when a control of another | |
| 673 | control class is found:</para> | |
| 674 | ||
| 675 | <informalexample> | |
| 676 | <programlisting> | |
| 677 | qctrl.id = V4L2_CTRL_CLASS_MPEG | V4L2_CTRL_FLAG_NEXT_CTRL; | |
| 678 | while (0 == ioctl (fd, &VIDIOC-QUERYCTRL;, &qctrl)) { | |
| 679 | if (V4L2_CTRL_ID2CLASS (qctrl.id) != V4L2_CTRL_CLASS_MPEG) | |
| 680 | break; | |
| 681 | /* ... */ | |
| 682 | qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL; | |
| 683 | } | |
| 684 | </programlisting> | |
| 685 | </informalexample> | |
| 686 | ||
| 687 | <para>The 32-bit <structfield>qctrl.id</structfield> value is | |
| 688 | subdivided into three bit ranges: the top 4 bits are reserved for | |
| 689 | flags (⪚ <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant>) and are not | |
| 690 | actually part of the ID. The remaining 28 bits form the control ID, of | |
| 691 | which the most significant 12 bits define the control class and the | |
| 692 | least significant 16 bits identify the control within the control | |
| 693 | class. It is guaranteed that these last 16 bits are always non-zero | |
| 694 | for controls. The range of 0x1000 and up are reserved for | |
| 695 | driver-specific controls. The macro | |
| 696 | <constant>V4L2_CTRL_ID2CLASS(id)</constant> returns the control class | |
| 697 | ID based on a control ID.</para> | |
| 698 | ||
| 699 | <para>If the driver does not support extended controls, then | |
| 700 | <constant>VIDIOC_QUERYCTRL</constant> will fail when used in | |
| 701 | combination with <constant>V4L2_CTRL_FLAG_NEXT_CTRL</constant>. In | |
| 702 | that case the old method of enumerating control should be used (see | |
| 703 | 1.8). But if it is supported, then it is guaranteed to enumerate over | |
| 704 | all controls, including driver-private controls.</para> | |
| 705 | </section> | |
| 706 | ||
| 707 | <section> | |
| 708 | <title>Creating Control Panels</title> | |
| 709 | ||
| 710 | <para>It is possible to create control panels for a graphical | |
| 711 | user interface where the user can select the various controls. | |
| 712 | Basically you will have to iterate over all controls using the method | |
| 713 | described above. Each control class starts with a control of type | |
| 714 | <constant>V4L2_CTRL_TYPE_CTRL_CLASS</constant>. | |
| 715 | <constant>VIDIOC_QUERYCTRL</constant> will return the name of this | |
| 716 | control class which can be used as the title of a tab page within a | |
| 717 | control panel.</para> | |
| 718 | ||
| 719 | <para>The flags field of &v4l2-queryctrl; also contains hints on | |
| 720 | the behavior of the control. See the &VIDIOC-QUERYCTRL; documentation | |
| 721 | for more details.</para> | |
| 722 | </section> | |
| 723 | ||
| 724 | <section id="mpeg-controls"> | |
| 725 | <title>MPEG Control Reference</title> | |
| 726 | ||
| 727 | <para>Below all controls within the MPEG control class are | |
| 728 | described. First the generic controls, then controls specific for | |
| 729 | certain hardware.</para> | |
| 730 | ||
| 731 | <section> | |
| 732 | <title>Generic MPEG Controls</title> | |
| 733 | ||
| 734 | <table pgwide="1" frame="none" id="mpeg-control-id"> | |
| 735 | <title>MPEG Control IDs</title> | |
| 736 | <tgroup cols="4"> | |
| 737 | <colspec colname="c1" colwidth="1*" /> | |
| 738 | <colspec colname="c2" colwidth="6*" /> | |
| 739 | <colspec colname="c3" colwidth="2*" /> | |
| 740 | <colspec colname="c4" colwidth="6*" /> | |
| 741 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 742 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 743 | <thead> | |
| 744 | <row> | |
| 745 | <entry spanname="id" align="left">ID</entry> | |
| 746 | <entry align="left">Type</entry> | |
| 747 | </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> | |
| 748 | </row> | |
| 749 | </thead> | |
| 750 | <tbody valign="top"> | |
| 751 | <row><entry></entry></row> | |
| 752 | <row> | |
| 753 | <entry spanname="id"><constant>V4L2_CID_MPEG_CLASS</constant> </entry> | |
| 754 | <entry>class</entry> | |
| 755 | </row><row><entry spanname="descr">The MPEG class | |
| 756 | descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a | |
| 757 | description of this control class. This description can be used as the | |
| 758 | caption of a Tab page in a GUI, for example.</entry> | |
| 759 | </row> | |
| 760 | <row><entry></entry></row> | |
| 761 | <row id="v4l2-mpeg-stream-type"> | |
| 762 | <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_TYPE</constant> </entry> | |
| 763 | <entry>enum v4l2_mpeg_stream_type</entry> | |
| 764 | </row><row><entry spanname="descr">The MPEG-1, -2 or -4 | |
| 765 | output stream type. One cannot assume anything here. Each hardware | |
| 766 | MPEG encoder tends to support different subsets of the available MPEG | |
| 4fa64dae KD |
767 | stream types. This control is specific to multiplexed MPEG streams. |
| 768 | The currently defined stream types are:</entry> | |
| 8e080c2e MCC |
769 | </row> |
| 770 | <row> | |
| 771 | <entrytbl spanname="descr" cols="2"> | |
| 772 | <tbody valign="top"> | |
| 773 | <row> | |
| 774 | <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_PS</constant> </entry> | |
| 775 | <entry>MPEG-2 program stream</entry> | |
| 776 | </row> | |
| 777 | <row> | |
| 778 | <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_TS</constant> </entry> | |
| 779 | <entry>MPEG-2 transport stream</entry> | |
| 780 | </row> | |
| 781 | <row> | |
| 782 | <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG1_SS</constant> </entry> | |
| 783 | <entry>MPEG-1 system stream</entry> | |
| 784 | </row> | |
| 785 | <row> | |
| 786 | <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_DVD</constant> </entry> | |
| 787 | <entry>MPEG-2 DVD-compatible stream</entry> | |
| 788 | </row> | |
| 789 | <row> | |
| 790 | <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG1_VCD</constant> </entry> | |
| 791 | <entry>MPEG-1 VCD-compatible stream</entry> | |
| 792 | </row> | |
| 793 | <row> | |
| 794 | <entry><constant>V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD</constant> </entry> | |
| 795 | <entry>MPEG-2 SVCD-compatible stream</entry> | |
| 796 | </row> | |
| 797 | </tbody> | |
| 798 | </entrytbl> | |
| 799 | </row> | |
| 800 | <row><entry></entry></row> | |
| 801 | <row> | |
| 802 | <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_PMT</constant> </entry> | |
| 803 | <entry>integer</entry> | |
| 804 | </row><row><entry spanname="descr">Program Map Table | |
| 805 | Packet ID for the MPEG transport stream (default 16)</entry> | |
| 806 | </row> | |
| 807 | <row><entry></entry></row> | |
| 808 | <row> | |
| 809 | <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_AUDIO</constant> </entry> | |
| 810 | <entry>integer</entry> | |
| 811 | </row><row><entry spanname="descr">Audio Packet ID for | |
| 812 | the MPEG transport stream (default 256)</entry> | |
| 813 | </row> | |
| 814 | <row><entry></entry></row> | |
| 815 | <row> | |
| 816 | <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_VIDEO</constant> </entry> | |
| 817 | <entry>integer</entry> | |
| 818 | </row><row><entry spanname="descr">Video Packet ID for | |
| 819 | the MPEG transport stream (default 260)</entry> | |
| 820 | </row> | |
| 821 | <row><entry></entry></row> | |
| 822 | <row> | |
| 823 | <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PID_PCR</constant> </entry> | |
| 824 | <entry>integer</entry> | |
| 825 | </row><row><entry spanname="descr">Packet ID for the | |
| 826 | MPEG transport stream carrying PCR fields (default 259)</entry> | |
| 827 | </row> | |
| 828 | <row><entry></entry></row> | |
| 829 | <row> | |
| 830 | <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PES_ID_AUDIO</constant> </entry> | |
| 831 | <entry>integer</entry> | |
| 832 | </row><row><entry spanname="descr">Audio ID for MPEG | |
| 833 | PES</entry> | |
| 834 | </row> | |
| 835 | <row><entry></entry></row> | |
| 836 | <row> | |
| 837 | <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_PES_ID_VIDEO</constant> </entry> | |
| 838 | <entry>integer</entry> | |
| 839 | </row><row><entry spanname="descr">Video ID for MPEG | |
| 840 | PES</entry> | |
| 841 | </row> | |
| 842 | <row><entry></entry></row> | |
| 843 | <row id="v4l2-mpeg-stream-vbi-fmt"> | |
| 844 | <entry spanname="id"><constant>V4L2_CID_MPEG_STREAM_VBI_FMT</constant> </entry> | |
| 845 | <entry>enum v4l2_mpeg_stream_vbi_fmt</entry> | |
| 846 | </row><row><entry spanname="descr">Some cards can embed | |
| 847 | VBI data (⪚ Closed Caption, Teletext) into the MPEG stream. This | |
| 848 | control selects whether VBI data should be embedded, and if so, what | |
| 849 | embedding method should be used. The list of possible VBI formats | |
| 850 | depends on the driver. The currently defined VBI format types | |
| 851 | are:</entry> | |
| 852 | </row> | |
| 853 | <row> | |
| 854 | <entrytbl spanname="descr" cols="2"> | |
| 855 | <tbody valign="top"> | |
| 856 | <row> | |
| 857 | <entry><constant>V4L2_MPEG_STREAM_VBI_FMT_NONE</constant> </entry> | |
| 858 | <entry>No VBI in the MPEG stream</entry> | |
| 859 | </row> | |
| 860 | <row> | |
| 861 | <entry><constant>V4L2_MPEG_STREAM_VBI_FMT_IVTV</constant> </entry> | |
| 862 | <entry>VBI in private packets, IVTV format (documented | |
| 863 | in the kernel sources in the file <filename>Documentation/video4linux/cx2341x/README.vbi</filename>)</entry> | |
| 864 | </row> | |
| 865 | </tbody> | |
| 866 | </entrytbl> | |
| 867 | </row> | |
| 868 | <row><entry></entry></row> | |
| 869 | <row id="v4l2-mpeg-audio-sampling-freq"> | |
| 870 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ</constant> </entry> | |
| 871 | <entry>enum v4l2_mpeg_audio_sampling_freq</entry> | |
| 872 | </row><row><entry spanname="descr">MPEG Audio sampling | |
| 873 | frequency. Possible values are:</entry> | |
| 874 | </row> | |
| 875 | <row> | |
| 876 | <entrytbl spanname="descr" cols="2"> | |
| 877 | <tbody valign="top"> | |
| 878 | <row> | |
| 879 | <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100</constant> </entry> | |
| 880 | <entry>44.1 kHz</entry> | |
| 881 | </row> | |
| 882 | <row> | |
| 883 | <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000</constant> </entry> | |
| 884 | <entry>48 kHz</entry> | |
| 885 | </row> | |
| 886 | <row> | |
| 887 | <entry><constant>V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000</constant> </entry> | |
| 888 | <entry>32 kHz</entry> | |
| 889 | </row> | |
| 890 | </tbody> | |
| 891 | </entrytbl> | |
| 892 | </row> | |
| 893 | <row><entry></entry></row> | |
| 894 | <row id="v4l2-mpeg-audio-encoding"> | |
| 895 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_ENCODING</constant> </entry> | |
| 896 | <entry>enum v4l2_mpeg_audio_encoding</entry> | |
| 897 | </row><row><entry spanname="descr">MPEG Audio encoding. | |
| 4fa64dae | 898 | This control is specific to multiplexed MPEG streams. |
| 8e080c2e MCC |
899 | Possible values are:</entry> |
| 900 | </row> | |
| 901 | <row> | |
| 902 | <entrytbl spanname="descr" cols="2"> | |
| 903 | <tbody valign="top"> | |
| 904 | <row> | |
| 905 | <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_1</constant> </entry> | |
| 906 | <entry>MPEG-1/2 Layer I encoding</entry> | |
| 907 | </row> | |
| 908 | <row> | |
| 909 | <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_2</constant> </entry> | |
| 910 | <entry>MPEG-1/2 Layer II encoding</entry> | |
| 911 | </row> | |
| 912 | <row> | |
| 913 | <entry><constant>V4L2_MPEG_AUDIO_ENCODING_LAYER_3</constant> </entry> | |
| 914 | <entry>MPEG-1/2 Layer III encoding</entry> | |
| 915 | </row> | |
| 916 | <row> | |
| 917 | <entry><constant>V4L2_MPEG_AUDIO_ENCODING_AAC</constant> </entry> | |
| 918 | <entry>MPEG-2/4 AAC (Advanced Audio Coding)</entry> | |
| 919 | </row> | |
| 920 | <row> | |
| 921 | <entry><constant>V4L2_MPEG_AUDIO_ENCODING_AC3</constant> </entry> | |
| 922 | <entry>AC-3 aka ATSC A/52 encoding</entry> | |
| 923 | </row> | |
| 924 | </tbody> | |
| 925 | </entrytbl> | |
| 926 | </row> | |
| 927 | <row><entry></entry></row> | |
| 928 | <row id="v4l2-mpeg-audio-l1-bitrate"> | |
| 929 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L1_BITRATE</constant> </entry> | |
| 930 | <entry>enum v4l2_mpeg_audio_l1_bitrate</entry> | |
| 931 | </row><row><entry spanname="descr">MPEG-1/2 Layer I bitrate. | |
| 932 | Possible values are:</entry> | |
| 933 | </row> | |
| 934 | <row> | |
| 935 | <entrytbl spanname="descr" cols="2"> | |
| 936 | <tbody valign="top"> | |
| 937 | <row> | |
| 938 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_32K</constant> </entry> | |
| 939 | <entry>32 kbit/s</entry></row> | |
| 940 | <row> | |
| 941 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_64K</constant> </entry> | |
| 942 | <entry>64 kbit/s</entry> | |
| 943 | </row> | |
| 944 | <row> | |
| 945 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_96K</constant> </entry> | |
| 946 | <entry>96 kbit/s</entry> | |
| 947 | </row> | |
| 948 | <row> | |
| 949 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_128K</constant> </entry> | |
| 950 | <entry>128 kbit/s</entry> | |
| 951 | </row> | |
| 952 | <row> | |
| 953 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_160K</constant> </entry> | |
| 954 | <entry>160 kbit/s</entry> | |
| 955 | </row> | |
| 956 | <row> | |
| 957 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_192K</constant> </entry> | |
| 958 | <entry>192 kbit/s</entry> | |
| 959 | </row> | |
| 960 | <row> | |
| 961 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_224K</constant> </entry> | |
| 962 | <entry>224 kbit/s</entry> | |
| 963 | </row> | |
| 964 | <row> | |
| 965 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_256K</constant> </entry> | |
| 966 | <entry>256 kbit/s</entry> | |
| 967 | </row> | |
| 968 | <row> | |
| 969 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_288K</constant> </entry> | |
| 970 | <entry>288 kbit/s</entry> | |
| 971 | </row> | |
| 972 | <row> | |
| 973 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_320K</constant> </entry> | |
| 974 | <entry>320 kbit/s</entry> | |
| 975 | </row> | |
| 976 | <row> | |
| 977 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_352K</constant> </entry> | |
| 978 | <entry>352 kbit/s</entry> | |
| 979 | </row> | |
| 980 | <row> | |
| 981 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_384K</constant> </entry> | |
| 982 | <entry>384 kbit/s</entry> | |
| 983 | </row> | |
| 984 | <row> | |
| 985 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_416K</constant> </entry> | |
| 986 | <entry>416 kbit/s</entry> | |
| 987 | </row> | |
| 988 | <row> | |
| 989 | <entry><constant>V4L2_MPEG_AUDIO_L1_BITRATE_448K</constant> </entry> | |
| 990 | <entry>448 kbit/s</entry> | |
| 991 | </row> | |
| 992 | </tbody> | |
| 993 | </entrytbl> | |
| 994 | </row> | |
| 995 | <row><entry></entry></row> | |
| 996 | <row id="v4l2-mpeg-audio-l2-bitrate"> | |
| 997 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L2_BITRATE</constant> </entry> | |
| 998 | <entry>enum v4l2_mpeg_audio_l2_bitrate</entry> | |
| 999 | </row><row><entry spanname="descr">MPEG-1/2 Layer II bitrate. | |
| 1000 | Possible values are:</entry> | |
| 1001 | </row> | |
| 1002 | <row> | |
| 1003 | <entrytbl spanname="descr" cols="2"> | |
| 1004 | <tbody valign="top"> | |
| 1005 | <row> | |
| 1006 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_32K</constant> </entry> | |
| 1007 | <entry>32 kbit/s</entry> | |
| 1008 | </row> | |
| 1009 | <row> | |
| 1010 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_48K</constant> </entry> | |
| 1011 | <entry>48 kbit/s</entry> | |
| 1012 | </row> | |
| 1013 | <row> | |
| 1014 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_56K</constant> </entry> | |
| 1015 | <entry>56 kbit/s</entry> | |
| 1016 | </row> | |
| 1017 | <row> | |
| 1018 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_64K</constant> </entry> | |
| 1019 | <entry>64 kbit/s</entry> | |
| 1020 | </row> | |
| 1021 | <row> | |
| 1022 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_80K</constant> </entry> | |
| 1023 | <entry>80 kbit/s</entry> | |
| 1024 | </row> | |
| 1025 | <row> | |
| 1026 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_96K</constant> </entry> | |
| 1027 | <entry>96 kbit/s</entry> | |
| 1028 | </row> | |
| 1029 | <row> | |
| 1030 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_112K</constant> </entry> | |
| 1031 | <entry>112 kbit/s</entry> | |
| 1032 | </row> | |
| 1033 | <row> | |
| 1034 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_128K</constant> </entry> | |
| 1035 | <entry>128 kbit/s</entry> | |
| 1036 | </row> | |
| 1037 | <row> | |
| 1038 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_160K</constant> </entry> | |
| 1039 | <entry>160 kbit/s</entry> | |
| 1040 | </row> | |
| 1041 | <row> | |
| 1042 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_192K</constant> </entry> | |
| 1043 | <entry>192 kbit/s</entry> | |
| 1044 | </row> | |
| 1045 | <row> | |
| 1046 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_224K</constant> </entry> | |
| 1047 | <entry>224 kbit/s</entry> | |
| 1048 | </row> | |
| 1049 | <row> | |
| 1050 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_256K</constant> </entry> | |
| 1051 | <entry>256 kbit/s</entry> | |
| 1052 | </row> | |
| 1053 | <row> | |
| 1054 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_320K</constant> </entry> | |
| 1055 | <entry>320 kbit/s</entry> | |
| 1056 | </row> | |
| 1057 | <row> | |
| 1058 | <entry><constant>V4L2_MPEG_AUDIO_L2_BITRATE_384K</constant> </entry> | |
| 1059 | <entry>384 kbit/s</entry> | |
| 1060 | </row> | |
| 1061 | </tbody> | |
| 1062 | </entrytbl> | |
| 1063 | </row> | |
| 1064 | <row><entry></entry></row> | |
| 1065 | <row id="v4l2-mpeg-audio-l3-bitrate"> | |
| 1066 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_L3_BITRATE</constant> </entry> | |
| 1067 | <entry>enum v4l2_mpeg_audio_l3_bitrate</entry> | |
| 1068 | </row><row><entry spanname="descr">MPEG-1/2 Layer III bitrate. | |
| 1069 | Possible values are:</entry> | |
| 1070 | </row> | |
| 1071 | <row> | |
| 1072 | <entrytbl spanname="descr" cols="2"> | |
| 1073 | <tbody valign="top"> | |
| 1074 | <row> | |
| 1075 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_32K</constant> </entry> | |
| 1076 | <entry>32 kbit/s</entry> | |
| 1077 | </row> | |
| 1078 | <row> | |
| 1079 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_40K</constant> </entry> | |
| 1080 | <entry>40 kbit/s</entry> | |
| 1081 | </row> | |
| 1082 | <row> | |
| 1083 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_48K</constant> </entry> | |
| 1084 | <entry>48 kbit/s</entry> | |
| 1085 | </row> | |
| 1086 | <row> | |
| 1087 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_56K</constant> </entry> | |
| 1088 | <entry>56 kbit/s</entry> | |
| 1089 | </row> | |
| 1090 | <row> | |
| 1091 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_64K</constant> </entry> | |
| 1092 | <entry>64 kbit/s</entry> | |
| 1093 | </row> | |
| 1094 | <row> | |
| 1095 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_80K</constant> </entry> | |
| 1096 | <entry>80 kbit/s</entry> | |
| 1097 | </row> | |
| 1098 | <row> | |
| 1099 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_96K</constant> </entry> | |
| 1100 | <entry>96 kbit/s</entry> | |
| 1101 | </row> | |
| 1102 | <row> | |
| 1103 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_112K</constant> </entry> | |
| 1104 | <entry>112 kbit/s</entry> | |
| 1105 | </row> | |
| 1106 | <row> | |
| 1107 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_128K</constant> </entry> | |
| 1108 | <entry>128 kbit/s</entry> | |
| 1109 | </row> | |
| 1110 | <row> | |
| 1111 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_160K</constant> </entry> | |
| 1112 | <entry>160 kbit/s</entry> | |
| 1113 | </row> | |
| 1114 | <row> | |
| 1115 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_192K</constant> </entry> | |
| 1116 | <entry>192 kbit/s</entry> | |
| 1117 | </row> | |
| 1118 | <row> | |
| 1119 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_224K</constant> </entry> | |
| 1120 | <entry>224 kbit/s</entry> | |
| 1121 | </row> | |
| 1122 | <row> | |
| 1123 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_256K</constant> </entry> | |
| 1124 | <entry>256 kbit/s</entry> | |
| 1125 | </row> | |
| 1126 | <row> | |
| 1127 | <entry><constant>V4L2_MPEG_AUDIO_L3_BITRATE_320K</constant> </entry> | |
| 1128 | <entry>320 kbit/s</entry> | |
| 1129 | </row> | |
| 1130 | </tbody> | |
| 1131 | </entrytbl> | |
| 1132 | </row> | |
| 1133 | <row><entry></entry></row> | |
| 1134 | <row> | |
| 1135 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_AAC_BITRATE</constant> </entry> | |
| 1136 | <entry>integer</entry> | |
| 1137 | </row><row><entry spanname="descr">AAC bitrate in bits per second.</entry> | |
| 1138 | </row> | |
| 1139 | <row><entry></entry></row> | |
| 1140 | <row id="v4l2-mpeg-audio-ac3-bitrate"> | |
| 1141 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_AC3_BITRATE</constant> </entry> | |
| 1142 | <entry>enum v4l2_mpeg_audio_ac3_bitrate</entry> | |
| 1143 | </row><row><entry spanname="descr">AC-3 bitrate. | |
| 1144 | Possible values are:</entry> | |
| 1145 | </row> | |
| 1146 | <row> | |
| 1147 | <entrytbl spanname="descr" cols="2"> | |
| 1148 | <tbody valign="top"> | |
| 1149 | <row> | |
| 1150 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_32K</constant> </entry> | |
| 1151 | <entry>32 kbit/s</entry> | |
| 1152 | </row> | |
| 1153 | <row> | |
| 1154 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_40K</constant> </entry> | |
| 1155 | <entry>40 kbit/s</entry> | |
| 1156 | </row> | |
| 1157 | <row> | |
| 1158 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_48K</constant> </entry> | |
| 1159 | <entry>48 kbit/s</entry> | |
| 1160 | </row> | |
| 1161 | <row> | |
| 1162 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_56K</constant> </entry> | |
| 1163 | <entry>56 kbit/s</entry> | |
| 1164 | </row> | |
| 1165 | <row> | |
| 1166 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_64K</constant> </entry> | |
| 1167 | <entry>64 kbit/s</entry> | |
| 1168 | </row> | |
| 1169 | <row> | |
| 1170 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_80K</constant> </entry> | |
| 1171 | <entry>80 kbit/s</entry> | |
| 1172 | </row> | |
| 1173 | <row> | |
| 1174 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_96K</constant> </entry> | |
| 1175 | <entry>96 kbit/s</entry> | |
| 1176 | </row> | |
| 1177 | <row> | |
| 1178 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_112K</constant> </entry> | |
| 1179 | <entry>112 kbit/s</entry> | |
| 1180 | </row> | |
| 1181 | <row> | |
| 1182 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_128K</constant> </entry> | |
| 1183 | <entry>128 kbit/s</entry> | |
| 1184 | </row> | |
| 1185 | <row> | |
| 1186 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_160K</constant> </entry> | |
| 1187 | <entry>160 kbit/s</entry> | |
| 1188 | </row> | |
| 1189 | <row> | |
| 1190 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_192K</constant> </entry> | |
| 1191 | <entry>192 kbit/s</entry> | |
| 1192 | </row> | |
| 1193 | <row> | |
| 1194 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_224K</constant> </entry> | |
| 1195 | <entry>224 kbit/s</entry> | |
| 1196 | </row> | |
| 1197 | <row> | |
| 1198 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_256K</constant> </entry> | |
| 1199 | <entry>256 kbit/s</entry> | |
| 1200 | </row> | |
| 1201 | <row> | |
| 1202 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_320K</constant> </entry> | |
| 1203 | <entry>320 kbit/s</entry> | |
| 1204 | </row> | |
| 1205 | <row> | |
| 1206 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_384K</constant> </entry> | |
| 1207 | <entry>384 kbit/s</entry> | |
| 1208 | </row> | |
| 1209 | <row> | |
| 1210 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_448K</constant> </entry> | |
| 1211 | <entry>448 kbit/s</entry> | |
| 1212 | </row> | |
| 1213 | <row> | |
| 1214 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_512K</constant> </entry> | |
| 1215 | <entry>512 kbit/s</entry> | |
| 1216 | </row> | |
| 1217 | <row> | |
| 1218 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_576K</constant> </entry> | |
| 1219 | <entry>576 kbit/s</entry> | |
| 1220 | </row> | |
| 1221 | <row> | |
| 1222 | <entry><constant>V4L2_MPEG_AUDIO_AC3_BITRATE_640K</constant> </entry> | |
| 1223 | <entry>640 kbit/s</entry> | |
| 1224 | </row> | |
| 1225 | </tbody> | |
| 1226 | </entrytbl> | |
| 1227 | </row> | |
| 1228 | <row><entry></entry></row> | |
| 1229 | <row id="v4l2-mpeg-audio-mode"> | |
| 1230 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MODE</constant> </entry> | |
| 1231 | <entry>enum v4l2_mpeg_audio_mode</entry> | |
| 1232 | </row><row><entry spanname="descr">MPEG Audio mode. | |
| 1233 | Possible values are:</entry> | |
| 1234 | </row> | |
| 1235 | <row> | |
| 1236 | <entrytbl spanname="descr" cols="2"> | |
| 1237 | <tbody valign="top"> | |
| 1238 | <row> | |
| 1239 | <entry><constant>V4L2_MPEG_AUDIO_MODE_STEREO</constant> </entry> | |
| 1240 | <entry>Stereo</entry> | |
| 1241 | </row> | |
| 1242 | <row> | |
| 1243 | <entry><constant>V4L2_MPEG_AUDIO_MODE_JOINT_STEREO</constant> </entry> | |
| 1244 | <entry>Joint Stereo</entry> | |
| 1245 | </row> | |
| 1246 | <row> | |
| 1247 | <entry><constant>V4L2_MPEG_AUDIO_MODE_DUAL</constant> </entry> | |
| 1248 | <entry>Bilingual</entry> | |
| 1249 | </row> | |
| 1250 | <row> | |
| 1251 | <entry><constant>V4L2_MPEG_AUDIO_MODE_MONO</constant> </entry> | |
| 1252 | <entry>Mono</entry> | |
| 1253 | </row> | |
| 1254 | </tbody> | |
| 1255 | </entrytbl> | |
| 1256 | </row> | |
| 1257 | <row><entry></entry></row> | |
| 1258 | <row id="v4l2-mpeg-audio-mode-extension"> | |
| 1259 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MODE_EXTENSION</constant> </entry> | |
| 1260 | <entry>enum v4l2_mpeg_audio_mode_extension</entry> | |
| 1261 | </row><row><entry spanname="descr">Joint Stereo | |
| 1262 | audio mode extension. In Layer I and II they indicate which subbands | |
| 1263 | are in intensity stereo. All other subbands are coded in stereo. Layer | |
| 1264 | III is not (yet) supported. Possible values | |
| 1265 | are:</entry> | |
| 1266 | </row> | |
| 1267 | <row> | |
| 1268 | <entrytbl spanname="descr" cols="2"> | |
| 1269 | <tbody valign="top"> | |
| 1270 | <row> | |
| 1271 | <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_4</constant> </entry> | |
| 1272 | <entry>Subbands 4-31 in intensity stereo</entry> | |
| 1273 | </row> | |
| 1274 | <row> | |
| 1275 | <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_8</constant> </entry> | |
| 1276 | <entry>Subbands 8-31 in intensity stereo</entry> | |
| 1277 | </row> | |
| 1278 | <row> | |
| 1279 | <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_12</constant> </entry> | |
| 1280 | <entry>Subbands 12-31 in intensity stereo</entry> | |
| 1281 | </row> | |
| 1282 | <row> | |
| 1283 | <entry><constant>V4L2_MPEG_AUDIO_MODE_EXTENSION_BOUND_16</constant> </entry> | |
| 1284 | <entry>Subbands 16-31 in intensity stereo</entry> | |
| 1285 | </row> | |
| 1286 | </tbody> | |
| 1287 | </entrytbl> | |
| 1288 | </row> | |
| 1289 | <row><entry></entry></row> | |
| 1290 | <row id="v4l2-mpeg-audio-emphasis"> | |
| 1291 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_EMPHASIS</constant> </entry> | |
| 1292 | <entry>enum v4l2_mpeg_audio_emphasis</entry> | |
| 1293 | </row><row><entry spanname="descr">Audio Emphasis. | |
| 1294 | Possible values are:</entry> | |
| 1295 | </row> | |
| 1296 | <row> | |
| 1297 | <entrytbl spanname="descr" cols="2"> | |
| 1298 | <tbody valign="top"> | |
| 1299 | <row> | |
| 1300 | <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_NONE</constant> </entry> | |
| 1301 | <entry>None</entry> | |
| 1302 | </row> | |
| 1303 | <row> | |
| 1304 | <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_50_DIV_15_uS</constant> </entry> | |
| 1305 | <entry>50/15 microsecond emphasis</entry> | |
| 1306 | </row> | |
| 1307 | <row> | |
| 1308 | <entry><constant>V4L2_MPEG_AUDIO_EMPHASIS_CCITT_J17</constant> </entry> | |
| 1309 | <entry>CCITT J.17</entry> | |
| 1310 | </row> | |
| 1311 | </tbody> | |
| 1312 | </entrytbl> | |
| 1313 | </row> | |
| 1314 | <row><entry></entry></row> | |
| 1315 | <row id="v4l2-mpeg-audio-crc"> | |
| 1316 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_CRC</constant> </entry> | |
| 1317 | <entry>enum v4l2_mpeg_audio_crc</entry> | |
| 1318 | </row><row><entry spanname="descr">CRC method. Possible | |
| 1319 | values are:</entry> | |
| 1320 | </row> | |
| 1321 | <row> | |
| 1322 | <entrytbl spanname="descr" cols="2"> | |
| 1323 | <tbody valign="top"> | |
| 1324 | <row> | |
| 1325 | <entry><constant>V4L2_MPEG_AUDIO_CRC_NONE</constant> </entry> | |
| 1326 | <entry>None</entry> | |
| 1327 | </row> | |
| 1328 | <row> | |
| 1329 | <entry><constant>V4L2_MPEG_AUDIO_CRC_CRC16</constant> </entry> | |
| 1330 | <entry>16 bit parity check</entry> | |
| 1331 | </row> | |
| 1332 | </tbody> | |
| 1333 | </entrytbl> | |
| 1334 | </row> | |
| 1335 | <row><entry></entry></row> | |
| 1336 | <row> | |
| 1337 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_MUTE</constant> </entry> | |
| 1338 | <entry>boolean</entry> | |
| 1339 | </row><row><entry spanname="descr">Mutes the audio when | |
| 1340 | capturing. This is not done by muting audio hardware, which can still | |
| 1341 | produce a slight hiss, but in the encoder itself, guaranteeing a fixed | |
| 25985edc | 1342 | and reproducible audio bitstream. 0 = unmuted, 1 = muted.</entry> |
| 77bd4c0f HV |
1343 | </row> |
| 1344 | <row><entry></entry></row> | |
| 1345 | <row id="v4l2-mpeg-audio-dec-playback"> | |
| 1346 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK</constant> </entry> | |
| 1347 | <entry>enum v4l2_mpeg_audio_dec_playback</entry> | |
| 1348 | </row><row><entry spanname="descr">Determines how monolingual audio should be played back. | |
| 1349 | Possible values are:</entry> | |
| 1350 | </row> | |
| 1351 | <row> | |
| 1352 | <entrytbl spanname="descr" cols="2"> | |
| 1353 | <tbody valign="top"> | |
| 1354 | <row> | |
| 1355 | <entry><constant>V4L2_MPEG_AUDIO_DEC_PLAYBACK_AUTO</constant> </entry> | |
| 1356 | <entry>Automatically determines the best playback mode.</entry> | |
| 1357 | </row> | |
| 1358 | <row> | |
| 1359 | <entry><constant>V4L2_MPEG_AUDIO_DEC_PLAYBACK_STEREO</constant> </entry> | |
| 1360 | <entry>Stereo playback.</entry> | |
| 1361 | </row> | |
| 1362 | <row> | |
| 1363 | <entry><constant>V4L2_MPEG_AUDIO_DEC_PLAYBACK_LEFT</constant> </entry> | |
| 1364 | <entry>Left channel playback.</entry> | |
| 1365 | </row> | |
| 1366 | <row> | |
| 1367 | <entry><constant>V4L2_MPEG_AUDIO_DEC_PLAYBACK_RIGHT</constant> </entry> | |
| 1368 | <entry>Right channel playback.</entry> | |
| 1369 | </row> | |
| 1370 | <row> | |
| 1371 | <entry><constant>V4L2_MPEG_AUDIO_DEC_PLAYBACK_MONO</constant> </entry> | |
| 1372 | <entry>Mono playback.</entry> | |
| 1373 | </row> | |
| 1374 | <row> | |
| 1375 | <entry><constant>V4L2_MPEG_AUDIO_DEC_PLAYBACK_SWAPPED_STEREO</constant> </entry> | |
| 1376 | <entry>Stereo playback with swapped left and right channels.</entry> | |
| 1377 | </row> | |
| 1378 | </tbody> | |
| 1379 | </entrytbl> | |
| 1380 | </row> | |
| 1381 | <row><entry></entry></row> | |
| 1382 | <row id="v4l2-mpeg-audio-dec-multilingual-playback"> | |
| 1383 | <entry spanname="id"><constant>V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK</constant> </entry> | |
| 1384 | <entry>enum v4l2_mpeg_audio_dec_playback</entry> | |
| 1385 | </row><row><entry spanname="descr">Determines how multilingual audio should be played back.</entry> | |
| 8e080c2e MCC |
1386 | </row> |
| 1387 | <row><entry></entry></row> | |
| 1388 | <row id="v4l2-mpeg-video-encoding"> | |
| 1389 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_ENCODING</constant> </entry> | |
| 1390 | <entry>enum v4l2_mpeg_video_encoding</entry> | |
| 1391 | </row><row><entry spanname="descr">MPEG Video encoding | |
| 4fa64dae KD |
1392 | method. This control is specific to multiplexed MPEG streams. |
| 1393 | Possible values are:</entry> | |
| 8e080c2e MCC |
1394 | </row> |
| 1395 | <row> | |
| 1396 | <entrytbl spanname="descr" cols="2"> | |
| 1397 | <tbody valign="top"> | |
| 1398 | <row> | |
| 1399 | <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_1</constant> </entry> | |
| 1400 | <entry>MPEG-1 Video encoding</entry> | |
| 1401 | </row> | |
| 1402 | <row> | |
| 1403 | <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_2</constant> </entry> | |
| 1404 | <entry>MPEG-2 Video encoding</entry> | |
| 1405 | </row> | |
| 1406 | <row> | |
| 1407 | <entry><constant>V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC</constant> </entry> | |
| 1408 | <entry>MPEG-4 AVC (H.264) Video encoding</entry> | |
| 1409 | </row> | |
| 1410 | </tbody> | |
| 1411 | </entrytbl> | |
| 1412 | </row> | |
| 1413 | <row><entry></entry></row> | |
| 1414 | <row id="v4l2-mpeg-video-aspect"> | |
| 1415 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_ASPECT</constant> </entry> | |
| 1416 | <entry>enum v4l2_mpeg_video_aspect</entry> | |
| 1417 | </row><row><entry spanname="descr">Video aspect. | |
| 1418 | Possible values are:</entry> | |
| 1419 | </row> | |
| 1420 | <row> | |
| 1421 | <entrytbl spanname="descr" cols="2"> | |
| 1422 | <tbody valign="top"> | |
| 1423 | <row> | |
| 1424 | <entry><constant>V4L2_MPEG_VIDEO_ASPECT_1x1</constant> </entry> | |
| 1425 | </row> | |
| 1426 | <row> | |
| 1427 | <entry><constant>V4L2_MPEG_VIDEO_ASPECT_4x3</constant> </entry> | |
| 1428 | </row> | |
| 1429 | <row> | |
| 1430 | <entry><constant>V4L2_MPEG_VIDEO_ASPECT_16x9</constant> </entry> | |
| 1431 | </row> | |
| 1432 | <row> | |
| 1433 | <entry><constant>V4L2_MPEG_VIDEO_ASPECT_221x100</constant> </entry> | |
| 1434 | </row> | |
| 1435 | </tbody> | |
| 1436 | </entrytbl> | |
| 1437 | </row> | |
| 1438 | <row><entry></entry></row> | |
| 1439 | <row> | |
| 1440 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_B_FRAMES</constant> </entry> | |
| 1441 | <entry>integer</entry> | |
| 1442 | </row><row><entry spanname="descr">Number of B-Frames | |
| 1443 | (default 2)</entry> | |
| 1444 | </row> | |
| 1445 | <row><entry></entry></row> | |
| 1446 | <row> | |
| 1447 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_GOP_SIZE</constant> </entry> | |
| 1448 | <entry>integer</entry> | |
| 1449 | </row><row><entry spanname="descr">GOP size (default | |
| 1450 | 12)</entry> | |
| 1451 | </row> | |
| 1452 | <row><entry></entry></row> | |
| 1453 | <row> | |
| 1454 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_GOP_CLOSURE</constant> </entry> | |
| 1455 | <entry>boolean</entry> | |
| 1456 | </row><row><entry spanname="descr">GOP closure (default | |
| 1457 | 1)</entry> | |
| 1458 | </row> | |
| 1459 | <row><entry></entry></row> | |
| 1460 | <row> | |
| 1461 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_PULLDOWN</constant> </entry> | |
| 1462 | <entry>boolean</entry> | |
| 1463 | </row><row><entry spanname="descr">Enable 3:2 pulldown | |
| 1464 | (default 0)</entry> | |
| 1465 | </row> | |
| 1466 | <row><entry></entry></row> | |
| 1467 | <row id="v4l2-mpeg-video-bitrate-mode"> | |
| 1468 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE_MODE</constant> </entry> | |
| 1469 | <entry>enum v4l2_mpeg_video_bitrate_mode</entry> | |
| 1470 | </row><row><entry spanname="descr">Video bitrate mode. | |
| 1471 | Possible values are:</entry> | |
| 1472 | </row> | |
| 1473 | <row> | |
| 1474 | <entrytbl spanname="descr" cols="2"> | |
| 1475 | <tbody valign="top"> | |
| 1476 | <row> | |
| 1477 | <entry><constant>V4L2_MPEG_VIDEO_BITRATE_MODE_VBR</constant> </entry> | |
| 1478 | <entry>Variable bitrate</entry> | |
| 1479 | </row> | |
| 1480 | <row> | |
| 1481 | <entry><constant>V4L2_MPEG_VIDEO_BITRATE_MODE_CBR</constant> </entry> | |
| 1482 | <entry>Constant bitrate</entry> | |
| 1483 | </row> | |
| 1484 | </tbody> | |
| 1485 | </entrytbl> | |
| 1486 | </row> | |
| 1487 | <row><entry></entry></row> | |
| 1488 | <row> | |
| 1489 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE</constant> </entry> | |
| 1490 | <entry>integer</entry> | |
| 1491 | </row><row><entry spanname="descr">Video bitrate in bits | |
| 1492 | per second.</entry> | |
| 1493 | </row> | |
| 1494 | <row><entry></entry></row> | |
| 1495 | <row> | |
| 1496 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_BITRATE_PEAK</constant> </entry> | |
| 1497 | <entry>integer</entry> | |
| 1498 | </row><row><entry spanname="descr">Peak video bitrate in | |
| 1499 | bits per second. Must be larger or equal to the average video bitrate. | |
| 1500 | It is ignored if the video bitrate mode is set to constant | |
| 1501 | bitrate.</entry> | |
| 1502 | </row> | |
| 1503 | <row><entry></entry></row> | |
| 1504 | <row> | |
| 1505 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION</constant> </entry> | |
| 1506 | <entry>integer</entry> | |
| 1507 | </row><row><entry spanname="descr">For every captured | |
| 1508 | frame, skip this many subsequent frames (default 0).</entry> | |
| 1509 | </row> | |
| 1510 | <row><entry></entry></row> | |
| 1511 | <row> | |
| 1512 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MUTE</constant> </entry> | |
| 1513 | <entry>boolean</entry> | |
| 1514 | </row> | |
| 1515 | <row><entry spanname="descr">"Mutes" the video to a | |
| 1516 | fixed color when capturing. This is useful for testing, to produce a | |
| 1517 | fixed video bitstream. 0 = unmuted, 1 = muted.</entry> | |
| 1518 | </row> | |
| 1519 | <row><entry></entry></row> | |
| 1520 | <row> | |
| 1521 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MUTE_YUV</constant> </entry> | |
| 1522 | <entry>integer</entry> | |
| 1523 | </row><row><entry spanname="descr">Sets the "mute" color | |
| 1524 | of the video. The supplied 32-bit integer is interpreted as follows (bit | |
| 1525 | 0 = least significant bit):</entry> | |
| 1526 | </row> | |
| 1527 | <row> | |
| 1528 | <entrytbl spanname="descr" cols="2"> | |
| 1529 | <tbody valign="top"> | |
| 1530 | <row> | |
| 1531 | <entry>Bit 0:7</entry> | |
| 1532 | <entry>V chrominance information</entry> | |
| 1533 | </row> | |
| 1534 | <row> | |
| 1535 | <entry>Bit 8:15</entry> | |
| 1536 | <entry>U chrominance information</entry> | |
| 1537 | </row> | |
| 1538 | <row> | |
| 1539 | <entry>Bit 16:23</entry> | |
| 1540 | <entry>Y luminance information</entry> | |
| 1541 | </row> | |
| 1542 | <row> | |
| 1543 | <entry>Bit 24:31</entry> | |
| 1544 | <entry>Must be zero.</entry> | |
| 1545 | </row> | |
| 1546 | </tbody> | |
| 1547 | </entrytbl> | |
| 1548 | </row> | |
| 77bd4c0f HV |
1549 | <row><entry></entry></row> |
| 1550 | <row id="v4l2-mpeg-video-dec-pts"> | |
| 1551 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DEC_PTS</constant> </entry> | |
| 1552 | <entry>integer64</entry> | |
| 1553 | </row><row><entry spanname="descr">This read-only control returns the | |
| 1554 | 33-bit video Presentation Time Stamp as defined in ITU T-REC-H.222.0 and ISO/IEC 13818-1 of | |
| 1555 | the currently displayed frame. This is the same PTS as is used in &VIDIOC-DECODER-CMD;.</entry> | |
| 1556 | </row> | |
| 1557 | <row><entry></entry></row> | |
| 1558 | <row id="v4l2-mpeg-video-dec-frame"> | |
| 1559 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DEC_FRAME</constant> </entry> | |
| 1560 | <entry>integer64</entry> | |
| 1561 | </row><row><entry spanname="descr">This read-only control returns the | |
| 1562 | frame counter of the frame that is currently displayed (decoded). This value is reset to 0 whenever | |
| 1563 | the decoder is started.</entry> | |
| 1564 | </row> | |
| e65e4f13 | 1565 | |
| e65e4f13 KD |
1566 | <row><entry></entry></row> |
| 1567 | <row> | |
| 1568 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE</constant> </entry> | |
| 1569 | <entry>boolean</entry> | |
| 1570 | </row> | |
| 1571 | <row><entry spanname="descr">If enabled the decoder expects to receive a single slice per buffer, otherwise | |
| 1572 | the decoder expects a single frame in per buffer. Applicable to the decoder, all codecs. | |
| 1573 | </entry> | |
| 1574 | </row> | |
| 1575 | ||
| 1576 | <row><entry></entry></row> | |
| 1577 | <row> | |
| 1578 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE</constant> </entry> | |
| 1579 | <entry>boolean</entry> | |
| 1580 | </row> | |
| 1581 | <row><entry spanname="descr">Enable writing sample aspect ratio in the Video Usability Information. | |
| 1582 | Applicable to the H264 encoder.</entry> | |
| 1583 | </row> | |
| 1584 | ||
| 1585 | <row><entry></entry></row> | |
| 6a02a330 | 1586 | <row id="v4l2-mpeg-video-h264-vui-sar-idc"> |
| e65e4f13 KD |
1587 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC</constant> </entry> |
| 1588 | <entry>enum v4l2_mpeg_video_h264_vui_sar_idc</entry> | |
| 1589 | </row> | |
| 1590 | <row><entry spanname="descr">VUI sample aspect ratio indicator for H.264 encoding. The value | |
| 1591 | is defined in the table E-1 in the standard. Applicable to the H264 encoder.</entry> | |
| 1592 | </row> | |
| 1593 | <row> | |
| 1594 | <entrytbl spanname="descr" cols="2"> | |
| 1595 | <tbody valign="top"> | |
| 1596 | ||
| 1597 | <row> | |
| 1598 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_UNSPECIFIED</constant> </entry> | |
| 1599 | <entry>Unspecified</entry> | |
| 1600 | </row> | |
| 1601 | <row> | |
| 1602 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_1x1</constant> </entry> | |
| 1603 | <entry>1x1</entry> | |
| 1604 | </row> | |
| 1605 | <row> | |
| 1606 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_12x11</constant> </entry> | |
| 1607 | <entry>12x11</entry> | |
| 1608 | </row> | |
| 1609 | <row> | |
| 1610 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_10x11</constant> </entry> | |
| 1611 | <entry>10x11</entry> | |
| 1612 | </row> | |
| 1613 | <row> | |
| 1614 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_16x11</constant> </entry> | |
| 1615 | <entry>16x11</entry> | |
| 1616 | </row> | |
| 1617 | <row> | |
| 1618 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_40x33</constant> </entry> | |
| 1619 | <entry>40x33</entry> | |
| 1620 | </row> | |
| 1621 | <row> | |
| 1622 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_24x11</constant> </entry> | |
| 1623 | <entry>24x11</entry> | |
| 1624 | </row> | |
| 1625 | <row> | |
| 1626 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_20x11</constant> </entry> | |
| 1627 | <entry>20x11</entry> | |
| 1628 | </row> | |
| 1629 | <row> | |
| 1630 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_32x11</constant> </entry> | |
| 1631 | <entry>32x11</entry> | |
| 1632 | </row> | |
| 1633 | <row> | |
| 1634 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_80x33</constant> </entry> | |
| 1635 | <entry>80x33</entry> | |
| 1636 | </row> | |
| 1637 | <row> | |
| 1638 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_18x11</constant> </entry> | |
| 1639 | <entry>18x11</entry> | |
| 1640 | </row> | |
| 1641 | <row> | |
| 1642 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_15x11</constant> </entry> | |
| 1643 | <entry>15x11</entry> | |
| 1644 | </row> | |
| 1645 | <row> | |
| 1646 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_64x33</constant> </entry> | |
| 1647 | <entry>64x33</entry> | |
| 1648 | </row> | |
| 1649 | <row> | |
| 1650 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_160x99</constant> </entry> | |
| 1651 | <entry>160x99</entry> | |
| 1652 | </row> | |
| 1653 | <row> | |
| 1654 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_4x3</constant> </entry> | |
| 1655 | <entry>4x3</entry> | |
| 1656 | </row> | |
| 1657 | <row> | |
| 1658 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_3x2</constant> </entry> | |
| 1659 | <entry>3x2</entry> | |
| 1660 | </row> | |
| 1661 | <row> | |
| 1662 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_2x1</constant> </entry> | |
| 1663 | <entry>2x1</entry> | |
| 1664 | </row> | |
| 1665 | <row> | |
| 1666 | <entry><constant>V4L2_MPEG_VIDEO_H264_VUI_SAR_IDC_EXTENDED</constant> </entry> | |
| 1667 | <entry>Extended SAR</entry> | |
| 1668 | </row> | |
| 1669 | </tbody> | |
| 1670 | </entrytbl> | |
| 1671 | </row> | |
| 1672 | ||
| 1673 | <row><entry></entry></row> | |
| 1674 | <row> | |
| 1675 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH</constant> </entry> | |
| 1676 | <entry>integer</entry> | |
| 1677 | </row> | |
| 1678 | <row><entry spanname="descr">Extended sample aspect ratio width for H.264 VUI encoding. | |
| 1679 | Applicable to the H264 encoder.</entry> | |
| 1680 | </row> | |
| 1681 | ||
| 1682 | <row><entry></entry></row> | |
| 1683 | <row> | |
| 1684 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT</constant> </entry> | |
| 1685 | <entry>integer</entry> | |
| 1686 | </row> | |
| 1687 | <row><entry spanname="descr">Extended sample aspect ratio height for H.264 VUI encoding. | |
| 1688 | Applicable to the H264 encoder.</entry> | |
| 1689 | </row> | |
| 1690 | ||
| 1691 | <row><entry></entry></row> | |
| 6a02a330 | 1692 | <row id="v4l2-mpeg-video-h264-level"> |
| e65e4f13 KD |
1693 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LEVEL</constant> </entry> |
| 1694 | <entry>enum v4l2_mpeg_video_h264_level</entry> | |
| 1695 | </row> | |
| 1696 | <row><entry spanname="descr">The level information for the H264 video elementary stream. | |
| 1697 | Applicable to the H264 encoder. | |
| 1698 | Possible values are:</entry> | |
| 1699 | </row> | |
| 1700 | <row> | |
| 1701 | <entrytbl spanname="descr" cols="2"> | |
| 1702 | <tbody valign="top"> | |
| 1703 | <row> | |
| 1704 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_0</constant> </entry> | |
| 1705 | <entry>Level 1.0</entry> | |
| 1706 | </row> | |
| 1707 | <row> | |
| 1708 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1B</constant> </entry> | |
| 1709 | <entry>Level 1B</entry> | |
| 1710 | </row> | |
| 1711 | <row> | |
| 1712 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_1</constant> </entry> | |
| 1713 | <entry>Level 1.1</entry> | |
| 1714 | </row> | |
| 1715 | <row> | |
| 1716 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_2</constant> </entry> | |
| 1717 | <entry>Level 1.2</entry> | |
| 1718 | </row> | |
| 1719 | <row> | |
| 1720 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_1_3</constant> </entry> | |
| 1721 | <entry>Level 1.3</entry> | |
| 1722 | </row> | |
| 1723 | <row> | |
| 1724 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_0</constant> </entry> | |
| 1725 | <entry>Level 2.0</entry> | |
| 1726 | </row> | |
| 1727 | <row> | |
| 1728 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_1</constant> </entry> | |
| 1729 | <entry>Level 2.1</entry> | |
| 1730 | </row> | |
| 1731 | <row> | |
| 1732 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_2_2</constant> </entry> | |
| 1733 | <entry>Level 2.2</entry> | |
| 1734 | </row> | |
| 1735 | <row> | |
| 1736 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_0</constant> </entry> | |
| 1737 | <entry>Level 3.0</entry> | |
| 1738 | </row> | |
| 1739 | <row> | |
| 1740 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_1</constant> </entry> | |
| 1741 | <entry>Level 3.1</entry> | |
| 1742 | </row> | |
| 1743 | <row> | |
| 1744 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_3_2</constant> </entry> | |
| 1745 | <entry>Level 3.2</entry> | |
| 1746 | </row> | |
| 1747 | <row> | |
| 1748 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_0</constant> </entry> | |
| 1749 | <entry>Level 4.0</entry> | |
| 1750 | </row> | |
| 1751 | <row> | |
| 1752 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_1</constant> </entry> | |
| 1753 | <entry>Level 4.1</entry> | |
| 1754 | </row> | |
| 1755 | <row> | |
| 1756 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_4_2</constant> </entry> | |
| 1757 | <entry>Level 4.2</entry> | |
| 1758 | </row> | |
| 1759 | <row> | |
| 1760 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_5_0</constant> </entry> | |
| 1761 | <entry>Level 5.0</entry> | |
| 1762 | </row> | |
| 1763 | <row> | |
| 1764 | <entry><constant>V4L2_MPEG_VIDEO_H264_LEVEL_5_1</constant> </entry> | |
| 1765 | <entry>Level 5.1</entry> | |
| 1766 | </row> | |
| 1767 | </tbody> | |
| 1768 | </entrytbl> | |
| 1769 | </row> | |
| 1770 | ||
| 1771 | <row><entry></entry></row> | |
| 6a02a330 | 1772 | <row id="v4l2-mpeg-video-mpeg4-level"> |
| e65e4f13 KD |
1773 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL</constant> </entry> |
| 1774 | <entry>enum v4l2_mpeg_video_mpeg4_level</entry> | |
| 1775 | </row> | |
| 1776 | <row><entry spanname="descr">The level information for the MPEG4 elementary stream. | |
| 1777 | Applicable to the MPEG4 encoder. | |
| 1778 | Possible values are:</entry> | |
| 1779 | </row> | |
| 1780 | <row> | |
| 1781 | <entrytbl spanname="descr" cols="2"> | |
| 1782 | <tbody valign="top"> | |
| 1783 | <row> | |
| 1784 | <entry><constant>V4L2_MPEG_VIDEO_LEVEL_0</constant> </entry> | |
| 1785 | <entry>Level 0</entry> | |
| 1786 | </row> | |
| 1787 | <row> | |
| 1788 | <entry><constant>V4L2_MPEG_VIDEO_LEVEL_0B</constant> </entry> | |
| 1789 | <entry>Level 0b</entry> | |
| 1790 | </row> | |
| 1791 | <row> | |
| 1792 | <entry><constant>V4L2_MPEG_VIDEO_LEVEL_1</constant> </entry> | |
| 1793 | <entry>Level 1</entry> | |
| 1794 | </row> | |
| 1795 | <row> | |
| 1796 | <entry><constant>V4L2_MPEG_VIDEO_LEVEL_2</constant> </entry> | |
| 1797 | <entry>Level 2</entry> | |
| 1798 | </row> | |
| 1799 | <row> | |
| 1800 | <entry><constant>V4L2_MPEG_VIDEO_LEVEL_3</constant> </entry> | |
| 1801 | <entry>Level 3</entry> | |
| 1802 | </row> | |
| 1803 | <row> | |
| 1804 | <entry><constant>V4L2_MPEG_VIDEO_LEVEL_3B</constant> </entry> | |
| 1805 | <entry>Level 3b</entry> | |
| 1806 | </row> | |
| 1807 | <row> | |
| 1808 | <entry><constant>V4L2_MPEG_VIDEO_LEVEL_4</constant> </entry> | |
| 1809 | <entry>Level 4</entry> | |
| 1810 | </row> | |
| 1811 | <row> | |
| 1812 | <entry><constant>V4L2_MPEG_VIDEO_LEVEL_5</constant> </entry> | |
| 1813 | <entry>Level 5</entry> | |
| 1814 | </row> | |
| 1815 | </tbody> | |
| 1816 | </entrytbl> | |
| 1817 | </row> | |
| 1818 | ||
| 1819 | <row><entry></entry></row> | |
| 6a02a330 | 1820 | <row id="v4l2-mpeg-video-h264-profile"> |
| e65e4f13 | 1821 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_PROFILE</constant> </entry> |
| 6a02a330 | 1822 | <entry>enum v4l2_mpeg_video_h264_profile</entry> |
| e65e4f13 KD |
1823 | </row> |
| 1824 | <row><entry spanname="descr">The profile information for H264. | |
| 1825 | Applicable to the H264 encoder. | |
| 1826 | Possible values are:</entry> | |
| 1827 | </row> | |
| 1828 | <row> | |
| 1829 | <entrytbl spanname="descr" cols="2"> | |
| 1830 | <tbody valign="top"> | |
| 1831 | <row> | |
| 1832 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE</constant> </entry> | |
| 1833 | <entry>Baseline profile</entry> | |
| 1834 | </row> | |
| 1835 | <row> | |
| 1836 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE</constant> </entry> | |
| 1837 | <entry>Constrained Baseline profile</entry> | |
| 1838 | </row> | |
| 1839 | <row> | |
| 1840 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_MAIN</constant> </entry> | |
| 1841 | <entry>Main profile</entry> | |
| 1842 | </row> | |
| 1843 | <row> | |
| 1844 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED</constant> </entry> | |
| 1845 | <entry>Extended profile</entry> | |
| 1846 | </row> | |
| 1847 | <row> | |
| 1848 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH</constant> </entry> | |
| 1849 | <entry>High profile</entry> | |
| 1850 | </row> | |
| 1851 | <row> | |
| 1852 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10</constant> </entry> | |
| 1853 | <entry>High 10 profile</entry> | |
| 1854 | </row> | |
| 1855 | <row> | |
| 1856 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422</constant> </entry> | |
| 1857 | <entry>High 422 profile</entry> | |
| 1858 | </row> | |
| 1859 | <row> | |
| 1860 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_PREDICTIVE</constant> </entry> | |
| 1861 | <entry>High 444 Predictive profile</entry> | |
| 1862 | </row> | |
| 1863 | <row> | |
| 1864 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_10_INTRA</constant> </entry> | |
| 1865 | <entry>High 10 Intra profile</entry> | |
| 1866 | </row> | |
| 1867 | <row> | |
| 1868 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_422_INTRA</constant> </entry> | |
| 1869 | <entry>High 422 Intra profile</entry> | |
| 1870 | </row> | |
| 1871 | <row> | |
| 1872 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_HIGH_444_INTRA</constant> </entry> | |
| 1873 | <entry>High 444 Intra profile</entry> | |
| 1874 | </row> | |
| 1875 | <row> | |
| 1876 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_CAVLC_444_INTRA</constant> </entry> | |
| 1877 | <entry>CAVLC 444 Intra profile</entry> | |
| 1878 | </row> | |
| 1879 | <row> | |
| 1880 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_BASELINE</constant> </entry> | |
| 1881 | <entry>Scalable Baseline profile</entry> | |
| 1882 | </row> | |
| 1883 | <row> | |
| 1884 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_HIGH</constant> </entry> | |
| 1885 | <entry>Scalable High profile</entry> | |
| 1886 | </row> | |
| 1887 | <row> | |
| 1888 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_SCALABLE_HIGH_INTRA</constant> </entry> | |
| 1889 | <entry>Scalable High Intra profile</entry> | |
| 1890 | </row> | |
| 1891 | <row> | |
| 1892 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH</constant> </entry> | |
| 1893 | <entry>Stereo High profile</entry> | |
| 1894 | </row> | |
| 1895 | <row> | |
| 1896 | <entry><constant>V4L2_MPEG_VIDEO_H264_PROFILE_MULTIVIEW_HIGH</constant> </entry> | |
| 1897 | <entry>Multiview High profile</entry> | |
| 1898 | </row> | |
| 1899 | ||
| 1900 | </tbody> | |
| 1901 | </entrytbl> | |
| 1902 | </row> | |
| 1903 | ||
| 1904 | <row><entry></entry></row> | |
| 6a02a330 | 1905 | <row id="v4l2-mpeg-video-mpeg4-profile"> |
| e65e4f13 | 1906 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE</constant> </entry> |
| 6a02a330 | 1907 | <entry>enum v4l2_mpeg_video_mpeg4_profile</entry> |
| e65e4f13 KD |
1908 | </row> |
| 1909 | <row><entry spanname="descr">The profile information for MPEG4. | |
| 1910 | Applicable to the MPEG4 encoder. | |
| 1911 | Possible values are:</entry> | |
| 1912 | </row> | |
| 1913 | <row> | |
| 1914 | <entrytbl spanname="descr" cols="2"> | |
| 1915 | <tbody valign="top"> | |
| 1916 | <row> | |
| 1917 | <entry><constant>V4L2_MPEG_VIDEO_PROFILE_SIMPLE</constant> </entry> | |
| 1918 | <entry>Simple profile</entry> | |
| 1919 | </row> | |
| 1920 | <row> | |
| 1921 | <entry><constant>V4L2_MPEG_VIDEO_PROFILE_ADVANCED_SIMPLE</constant> </entry> | |
| 1922 | <entry>Advanced Simple profile</entry> | |
| 1923 | </row> | |
| 1924 | <row> | |
| 1925 | <entry><constant>V4L2_MPEG_VIDEO_PROFILE_CORE</constant> </entry> | |
| 1926 | <entry>Core profile</entry> | |
| 1927 | </row> | |
| 1928 | <row> | |
| 1929 | <entry><constant>V4L2_MPEG_VIDEO_PROFILE_SIMPLE_SCALABLE</constant> </entry> | |
| 1930 | <entry>Simple Scalable profile</entry> | |
| 1931 | </row> | |
| 1932 | <row> | |
| 1933 | <entry><constant>V4L2_MPEG_VIDEO_PROFILE_ADVANCED_CODING_EFFICIENCY</constant> </entry> | |
| 1934 | <entry></entry> | |
| 1935 | </row> | |
| 1936 | </tbody> | |
| 1937 | </entrytbl> | |
| 1938 | </row> | |
| 1939 | ||
| 1940 | <row><entry></entry></row> | |
| 1941 | <row> | |
| 1942 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MAX_REF_PIC</constant> </entry> | |
| 1943 | <entry>integer</entry> | |
| 1944 | </row> | |
| 1945 | <row><entry spanname="descr">The maximum number of reference pictures used for encoding. | |
| 1946 | Applicable to the encoder. | |
| 1947 | </entry> | |
| 1948 | </row> | |
| 1949 | ||
| 1950 | <row><entry></entry></row> | |
| 6a02a330 | 1951 | <row id="v4l2-mpeg-video-multi-slice-mode"> |
| e65e4f13 | 1952 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> </entry> |
| 6a02a330 | 1953 | <entry>enum v4l2_mpeg_video_multi_slice_mode</entry> |
| e65e4f13 KD |
1954 | </row> |
| 1955 | <row><entry spanname="descr">Determines how the encoder should handle division of frame into slices. | |
| 1956 | Applicable to the encoder. | |
| 1957 | Possible values are:</entry> | |
| 1958 | </row> | |
| 1959 | <row> | |
| 1960 | <entrytbl spanname="descr" cols="2"> | |
| 1961 | <tbody valign="top"> | |
| 1962 | <row> | |
| 1963 | <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE</constant> </entry> | |
| 1964 | <entry>Single slice per frame.</entry> | |
| 1965 | </row> | |
| 1966 | <row> | |
| 1967 | <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_MB</constant> </entry> | |
| 1968 | <entry>Multiple slices with set maximum number of macroblocks per slice.</entry> | |
| 1969 | </row> | |
| 1970 | <row> | |
| 1971 | <entry><constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES</constant> </entry> | |
| 1972 | <entry>Multiple slice with set maximum size in bytes per slice.</entry> | |
| 1973 | </row> | |
| 1974 | </tbody> | |
| 1975 | </entrytbl> | |
| 1976 | </row> | |
| 1977 | ||
| 1978 | <row><entry></entry></row> | |
| 1979 | <row> | |
| 1980 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB</constant> </entry> | |
| 1981 | <entry>integer</entry> | |
| 1982 | </row> | |
| 1983 | <row><entry spanname="descr">The maximum number of macroblocks in a slice. Used when | |
| 1984 | <constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> is set to <constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_MB</constant>. | |
| 1985 | Applicable to the encoder.</entry> | |
| 1986 | </row> | |
| 1987 | ||
| 1988 | <row><entry></entry></row> | |
| 1989 | <row> | |
| 1990 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES</constant> </entry> | |
| 1991 | <entry>integer</entry> | |
| 1992 | </row> | |
| 1993 | <row><entry spanname="descr">The maximum size of a slice in bytes. Used when | |
| 1994 | <constant>V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE</constant> is set to <constant>V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES</constant>. | |
| 1995 | Applicable to the encoder.</entry> | |
| 1996 | </row> | |
| 1997 | ||
| 1998 | <row><entry></entry></row> | |
| 6a02a330 | 1999 | <row id="v4l2-mpeg-video-h264-loop-filter-mode"> |
| e65e4f13 | 2000 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE</constant> </entry> |
| 6a02a330 | 2001 | <entry>enum v4l2_mpeg_video_h264_loop_filter_mode</entry> |
| e65e4f13 KD |
2002 | </row> |
| 2003 | <row><entry spanname="descr">Loop filter mode for H264 encoder. | |
| 2004 | Possible values are:</entry> | |
| 2005 | </row> | |
| 2006 | <row> | |
| 2007 | <entrytbl spanname="descr" cols="2"> | |
| 2008 | <tbody valign="top"> | |
| 2009 | <row> | |
| 2010 | <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED</constant> </entry> | |
| 2011 | <entry>Loop filter is enabled.</entry> | |
| 2012 | </row> | |
| 2013 | <row> | |
| 2014 | <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED</constant> </entry> | |
| 2015 | <entry>Loop filter is disabled.</entry> | |
| 2016 | </row> | |
| 2017 | <row> | |
| 2018 | <entry><constant>V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY</constant> </entry> | |
| 2019 | <entry>Loop filter is disabled at the slice boundary.</entry> | |
| 2020 | </row> | |
| 2021 | </tbody> | |
| 2022 | </entrytbl> | |
| 2023 | </row> | |
| 2024 | ||
| 2025 | <row><entry></entry></row> | |
| 2026 | <row> | |
| 2027 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA</constant> </entry> | |
| 2028 | <entry>integer</entry> | |
| 2029 | </row> | |
| 2030 | <row><entry spanname="descr">Loop filter alpha coefficient, defined in the H264 standard. | |
| 2031 | Applicable to the H264 encoder.</entry> | |
| 2032 | </row> | |
| 2033 | ||
| 2034 | <row><entry></entry></row> | |
| 2035 | <row> | |
| 2036 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA</constant> </entry> | |
| 2037 | <entry>integer</entry> | |
| 2038 | </row> | |
| 2039 | <row><entry spanname="descr">Loop filter beta coefficient, defined in the H264 standard. | |
| 2040 | Applicable to the H264 encoder.</entry> | |
| 2041 | </row> | |
| 2042 | ||
| 2043 | <row><entry></entry></row> | |
| 6a02a330 | 2044 | <row id="v4l2-mpeg-video-h264-entropy-mode"> |
| e65e4f13 | 2045 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE</constant> </entry> |
| 6a02a330 | 2046 | <entry>enum v4l2_mpeg_video_h264_entropy_mode</entry> |
| e65e4f13 KD |
2047 | </row> |
| 2048 | <row><entry spanname="descr">Entropy coding mode for H264 - CABAC/CAVALC. | |
| 2049 | Applicable to the H264 encoder. | |
| 2050 | Possible values are:</entry> | |
| 2051 | </row> | |
| 2052 | <row> | |
| 2053 | <entrytbl spanname="descr" cols="2"> | |
| 2054 | <tbody valign="top"> | |
| 2055 | <row> | |
| 2056 | <entry><constant>V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC</constant> </entry> | |
| 2057 | <entry>Use CAVLC entropy coding.</entry> | |
| 2058 | </row> | |
| 2059 | <row> | |
| 2060 | <entry><constant>V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC</constant> </entry> | |
| 2061 | <entry>Use CABAC entropy coding.</entry> | |
| 2062 | </row> | |
| 2063 | </tbody> | |
| 2064 | </entrytbl> | |
| 2065 | </row> | |
| 2066 | ||
| 2067 | <row><entry></entry></row> | |
| 2068 | <row> | |
| 2069 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM</constant> </entry> | |
| 2070 | <entry>boolean</entry> | |
| 2071 | </row> | |
| 2072 | <row><entry spanname="descr">Enable 8X8 transform for H264. Applicable to the H264 encoder.</entry> | |
| 2073 | </row> | |
| 2074 | ||
| 2075 | <row><entry></entry></row> | |
| 2076 | <row> | |
| 2077 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB</constant> </entry> | |
| 2078 | <entry>integer</entry> | |
| 2079 | </row> | |
| 2080 | <row><entry spanname="descr">Cyclic intra macroblock refresh. This is the number of continuous macroblocks | |
| c94bed8e | 2081 | refreshed every frame. Each frame a successive set of macroblocks is refreshed until the cycle completes and starts from the |
| e65e4f13 KD |
2082 | top of the frame. Applicable to H264, H263 and MPEG4 encoder.</entry> |
| 2083 | </row> | |
| 2084 | ||
| 2085 | <row><entry></entry></row> | |
| 2086 | <row> | |
| 2087 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE</constant> </entry> | |
| 2088 | <entry>boolean</entry> | |
| 2089 | </row> | |
| 2090 | <row><entry spanname="descr">Frame level rate control enable. | |
| 2091 | If this control is disabled then the quantization parameter for each frame type is constant and set with appropriate controls | |
| 2092 | (e.g. <constant>V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP</constant>). | |
| 2093 | If frame rate control is enabled then quantization parameter is adjusted to meet the chosen bitrate. Minimum and maximum value | |
| 2094 | for the quantization parameter can be set with appropriate controls (e.g. <constant>V4L2_CID_MPEG_VIDEO_H263_MIN_QP</constant>). | |
| 2095 | Applicable to encoders.</entry> | |
| 2096 | </row> | |
| 2097 | ||
| 2098 | <row><entry></entry></row> | |
| 2099 | <row> | |
| 2100 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant> </entry> | |
| 2101 | <entry>boolean</entry> | |
| 2102 | </row> | |
| 2103 | <row><entry spanname="descr">Macroblock level rate control enable. | |
| 2104 | Applicable to the MPEG4 and H264 encoders.</entry> | |
| 2105 | </row> | |
| 2106 | ||
| 2107 | <row><entry></entry></row> | |
| 2108 | <row> | |
| 2109 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_QPEL</constant> </entry> | |
| 2110 | <entry>boolean</entry> | |
| 2111 | </row> | |
| 2112 | <row><entry spanname="descr">Quarter pixel motion estimation for MPEG4. Applicable to the MPEG4 encoder.</entry> | |
| 2113 | </row> | |
| 2114 | ||
| 2115 | <row><entry></entry></row> | |
| 2116 | <row> | |
| 2117 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP</constant> </entry> | |
| 2118 | <entry>integer</entry> | |
| 2119 | </row> | |
| 2120 | <row><entry spanname="descr">Quantization parameter for an I frame for H263. Valid range: from 1 to 31.</entry> | |
| 2121 | </row> | |
| 2122 | ||
| 2123 | <row><entry></entry></row> | |
| 2124 | <row> | |
| 2125 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_MIN_QP</constant> </entry> | |
| 2126 | <entry>integer</entry> | |
| 2127 | </row> | |
| 2128 | <row><entry spanname="descr">Minimum quantization parameter for H263. Valid range: from 1 to 31.</entry> | |
| 2129 | </row> | |
| 2130 | ||
| 2131 | <row><entry></entry></row> | |
| 2132 | <row> | |
| 2133 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_MAX_QP</constant> </entry> | |
| 2134 | <entry>integer</entry> | |
| 2135 | </row> | |
| 2136 | <row><entry spanname="descr">Maximum quantization parameter for H263. Valid range: from 1 to 31.</entry> | |
| 2137 | </row> | |
| 2138 | ||
| 2139 | <row><entry></entry></row> | |
| 2140 | <row> | |
| 2141 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP</constant> </entry> | |
| 2142 | <entry>integer</entry> | |
| 2143 | </row> | |
| 2144 | <row><entry spanname="descr">Quantization parameter for an P frame for H263. Valid range: from 1 to 31.</entry> | |
| 2145 | </row> | |
| 2146 | ||
| 2147 | <row><entry></entry></row> | |
| 2148 | <row> | |
| 2149 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP</constant> </entry> | |
| 2150 | <entry>integer</entry> | |
| 2151 | </row> | |
| 2152 | <row><entry spanname="descr">Quantization parameter for an B frame for H263. Valid range: from 1 to 31.</entry> | |
| 2153 | </row> | |
| 2154 | ||
| 2155 | <row><entry></entry></row> | |
| 2156 | <row> | |
| 2157 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP</constant> </entry> | |
| 2158 | <entry>integer</entry> | |
| 2159 | </row> | |
| 2160 | <row><entry spanname="descr">Quantization parameter for an I frame for H264. Valid range: from 0 to 51.</entry> | |
| 2161 | </row> | |
| 2162 | ||
| 2163 | <row><entry></entry></row> | |
| 2164 | <row> | |
| 2165 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_MIN_QP</constant> </entry> | |
| 2166 | <entry>integer</entry> | |
| 2167 | </row> | |
| 2168 | <row><entry spanname="descr">Minimum quantization parameter for H264. Valid range: from 0 to 51.</entry> | |
| 2169 | </row> | |
| 2170 | ||
| 2171 | <row><entry></entry></row> | |
| 2172 | <row> | |
| 2173 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_MAX_QP</constant> </entry> | |
| 2174 | <entry>integer</entry> | |
| 2175 | </row> | |
| 2176 | <row><entry spanname="descr">Maximum quantization parameter for H264. Valid range: from 0 to 51.</entry> | |
| 2177 | </row> | |
| 2178 | ||
| 2179 | <row><entry></entry></row> | |
| 2180 | <row> | |
| 2181 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP</constant> </entry> | |
| 2182 | <entry>integer</entry> | |
| 2183 | </row> | |
| 2184 | <row><entry spanname="descr">Quantization parameter for an P frame for H264. Valid range: from 0 to 51.</entry> | |
| 2185 | </row> | |
| 2186 | ||
| 2187 | <row><entry></entry></row> | |
| 2188 | <row> | |
| 2189 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP</constant> </entry> | |
| 2190 | <entry>integer</entry> | |
| 2191 | </row> | |
| 2192 | <row><entry spanname="descr">Quantization parameter for an B frame for H264. Valid range: from 0 to 51.</entry> | |
| 2193 | </row> | |
| 2194 | ||
| 2195 | <row><entry></entry></row> | |
| 2196 | <row> | |
| 2197 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP</constant> </entry> | |
| 2198 | <entry>integer</entry> | |
| 2199 | </row> | |
| 2200 | <row><entry spanname="descr">Quantization parameter for an I frame for MPEG4. Valid range: from 1 to 31.</entry> | |
| 2201 | </row> | |
| 2202 | ||
| 2203 | <row><entry></entry></row> | |
| 2204 | <row> | |
| 2205 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP</constant> </entry> | |
| 2206 | <entry>integer</entry> | |
| 2207 | </row> | |
| 2208 | <row><entry spanname="descr">Minimum quantization parameter for MPEG4. Valid range: from 1 to 31.</entry> | |
| 2209 | </row> | |
| 2210 | ||
| 2211 | <row><entry></entry></row> | |
| 2212 | <row> | |
| 2213 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP</constant> </entry> | |
| 2214 | <entry>integer</entry> | |
| 2215 | </row> | |
| 2216 | <row><entry spanname="descr">Maximum quantization parameter for MPEG4. Valid range: from 1 to 31.</entry> | |
| 2217 | </row> | |
| 2218 | ||
| 2219 | <row><entry></entry></row> | |
| 2220 | <row> | |
| 2221 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP</constant> </entry> | |
| 2222 | <entry>integer</entry> | |
| 2223 | </row> | |
| 2224 | <row><entry spanname="descr">Quantization parameter for an P frame for MPEG4. Valid range: from 1 to 31.</entry> | |
| 2225 | </row> | |
| 2226 | ||
| 2227 | <row><entry></entry></row> | |
| 2228 | <row> | |
| 2229 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP</constant> </entry> | |
| 2230 | <entry>integer</entry> | |
| 2231 | </row> | |
| 2232 | <row><entry spanname="descr">Quantization parameter for an B frame for MPEG4. Valid range: from 1 to 31.</entry> | |
| 2233 | </row> | |
| 2234 | ||
| 2235 | <row><entry></entry></row> | |
| 2236 | <row> | |
| 2237 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VBV_SIZE</constant> </entry> | |
| 2238 | <entry>integer</entry> | |
| 2239 | </row> | |
| 2240 | <row><entry spanname="descr">The Video Buffer Verifier size in kilobytes, it is used as a limitation of frame skip. | |
| c94bed8e | 2241 | The VBV is defined in the standard as a mean to verify that the produced stream will be successfully decoded. |
| e65e4f13 KD |
2242 | The standard describes it as "Part of a hypothetical decoder that is conceptually connected to the |
| 2243 | output of the encoder. Its purpose is to provide a constraint on the variability of the data rate that an | |
| 2244 | encoder or editing process may produce.". | |
| 2245 | Applicable to the MPEG1, MPEG2, MPEG4 encoders.</entry> | |
| 2246 | </row> | |
| 2247 | ||
| 2e81dde9 AK |
2248 | <row><entry></entry></row> |
| 2249 | <row id="v4l2-mpeg-video-vbv-delay"> | |
| 2250 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VBV_DELAY</constant> </entry> | |
| 2251 | <entry>integer</entry> | |
| 2252 | </row><row><entry spanname="descr">Sets the initial delay in milliseconds for | |
| 2253 | VBV buffer control.</entry> | |
| 2254 | </row> | |
| 2255 | ||
| e65e4f13 KD |
2256 | <row><entry></entry></row> |
| 2257 | <row> | |
| 2258 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE</constant> </entry> | |
| 2259 | <entry>integer</entry> | |
| 2260 | </row> | |
| 2261 | <row><entry spanname="descr">The Coded Picture Buffer size in kilobytes, it is used as a limitation of frame skip. | |
| c94bed8e | 2262 | The CPB is defined in the H264 standard as a mean to verify that the produced stream will be successfully decoded. |
| e65e4f13 KD |
2263 | Applicable to the H264 encoder.</entry> |
| 2264 | </row> | |
| 2265 | ||
| 2266 | <row><entry></entry></row> | |
| 2267 | <row> | |
| 2268 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_I_PERIOD</constant> </entry> | |
| 2269 | <entry>integer</entry> | |
| 2270 | </row> | |
| 2271 | <row><entry spanname="descr">Period between I-frames in the open GOP for H264. In case of an open GOP | |
| 2272 | this is the period between two I-frames. The period between IDR (Instantaneous Decoding Refresh) frames is taken from the GOP_SIZE control. | |
| 2273 | An IDR frame, which stands for Instantaneous Decoding Refresh is an I-frame after which no prior frames are | |
| 2274 | referenced. This means that a stream can be restarted from an IDR frame without the need to store or decode any | |
| 2275 | previous frames. Applicable to the H264 encoder.</entry> | |
| 2276 | </row> | |
| 2277 | ||
| 2278 | <row><entry></entry></row> | |
| 6a02a330 | 2279 | <row id="v4l2-mpeg-video-header-mode"> |
| e65e4f13 | 2280 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_HEADER_MODE</constant> </entry> |
| 6a02a330 | 2281 | <entry>enum v4l2_mpeg_video_header_mode</entry> |
| e65e4f13 KD |
2282 | </row> |
| 2283 | <row><entry spanname="descr">Determines whether the header is returned as the first buffer or is | |
| 2284 | it returned together with the first frame. Applicable to encoders. | |
| 2285 | Possible values are:</entry> | |
| 2286 | </row> | |
| 2287 | <row> | |
| 2288 | <entrytbl spanname="descr" cols="2"> | |
| 2289 | <tbody valign="top"> | |
| 2290 | <row> | |
| 2291 | <entry><constant>V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE</constant> </entry> | |
| 2292 | <entry>The stream header is returned separately in the first buffer.</entry> | |
| 2293 | </row> | |
| 2294 | <row> | |
| 2295 | <entry><constant>V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME</constant> </entry> | |
| 2296 | <entry>The stream header is returned together with the first encoded frame.</entry> | |
| 2297 | </row> | |
| 2298 | </tbody> | |
| 2299 | </entrytbl> | |
| 2300 | </row> | |
| 2301 | <row><entry></entry></row> | |
| 9ca5470c HV |
2302 | <row> |
| 2303 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER</constant> </entry> | |
| 2304 | <entry>boolean</entry> | |
| 2305 | </row><row><entry spanname="descr">Repeat the video sequence headers. Repeating these | |
| 2306 | headers makes random access to the video stream easier. Applicable to the MPEG1, 2 and 4 encoder.</entry> | |
| 2307 | </row> | |
| e65e4f13 KD |
2308 | <row> |
| 2309 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER</constant> </entry> | |
| 2310 | <entry>boolean</entry> | |
| 2311 | </row><row><entry spanname="descr">Enabled the deblocking post processing filter for MPEG4 decoder. | |
| 2312 | Applicable to the MPEG4 decoder.</entry> | |
| 2313 | </row> | |
| 2314 | <row><entry></entry></row> | |
| 2315 | <row> | |
| 2316 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_VOP_TIME_RES</constant> </entry> | |
| 2317 | <entry>integer</entry> | |
| 2318 | </row><row><entry spanname="descr">vop_time_increment_resolution value for MPEG4. Applicable to the MPEG4 encoder.</entry> | |
| 2319 | </row> | |
| 2320 | <row><entry></entry></row> | |
| 2321 | <row> | |
| 2322 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_MPEG4_VOP_TIME_INC</constant> </entry> | |
| 2323 | <entry>integer</entry> | |
| 2324 | </row><row><entry spanname="descr">vop_time_increment value for MPEG4. Applicable to the MPEG4 encoder.</entry> | |
| 2325 | </row> | |
| 2e81dde9 AK |
2326 | |
| 2327 | <row><entry></entry></row> | |
| 2328 | <row> | |
| 2329 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING</constant> </entry> | |
| 2330 | <entry>boolean</entry> | |
| 2331 | </row> | |
| 2332 | <row><entry spanname="descr">Enable generation of frame packing supplemental enhancement information in the encoded bitstream. | |
| 2333 | The frame packing SEI message contains the arrangement of L and R planes for 3D viewing. Applicable to the H264 encoder.</entry> | |
| 2334 | </row> | |
| 2335 | ||
| 2336 | <row><entry></entry></row> | |
| 2337 | <row> | |
| 2338 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0</constant> </entry> | |
| 2339 | <entry>boolean</entry> | |
| 2340 | </row> | |
| 2341 | <row><entry spanname="descr">Sets current frame as frame0 in frame packing SEI. | |
| 2342 | Applicable to the H264 encoder.</entry> | |
| 2343 | </row> | |
| 2344 | ||
| 2345 | <row><entry></entry></row> | |
| 2346 | <row id="v4l2-mpeg-video-h264-sei-fp-arrangement-type"> | |
| 2347 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE</constant> </entry> | |
| 2348 | <entry>enum v4l2_mpeg_video_h264_sei_fp_arrangement_type</entry> | |
| 2349 | </row> | |
| 2350 | <row><entry spanname="descr">Frame packing arrangement type for H264 SEI. | |
| 2351 | Applicable to the H264 encoder. | |
| 2352 | Possible values are:</entry> | |
| 2353 | </row> | |
| 2354 | <row> | |
| 2355 | <entrytbl spanname="descr" cols="2"> | |
| 2356 | <tbody valign="top"> | |
| 2357 | <row> | |
| 2358 | <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_CHEKERBOARD</constant> </entry> | |
| 2359 | <entry>Pixels are alternatively from L and R.</entry> | |
| 2360 | </row> | |
| 2361 | <row> | |
| 2362 | <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_COLUMN</constant> </entry> | |
| 2363 | <entry>L and R are interlaced by column.</entry> | |
| 2364 | </row> | |
| 2365 | <row> | |
| 2366 | <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_ROW</constant> </entry> | |
| 2367 | <entry>L and R are interlaced by row.</entry> | |
| 2368 | </row> | |
| 2369 | <row> | |
| 2370 | <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_SIDE_BY_SIDE</constant> </entry> | |
| 2371 | <entry>L is on the left, R on the right.</entry> | |
| 2372 | </row> | |
| 2373 | <row> | |
| 2374 | <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_TOP_BOTTOM</constant> </entry> | |
| 2375 | <entry>L is on top, R on bottom.</entry> | |
| 2376 | </row> | |
| 2377 | <row> | |
| 2378 | <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_TEMPORAL</constant> </entry> | |
| 2379 | <entry>One view per frame.</entry> | |
| 2380 | </row> | |
| 2381 | </tbody> | |
| 2382 | </entrytbl> | |
| 2383 | </row> | |
| 2384 | ||
| 2385 | <row><entry></entry></row> | |
| 2386 | <row> | |
| 2387 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO</constant> </entry> | |
| 2388 | <entry>boolean</entry> | |
| 2389 | </row> | |
| 2390 | <row><entry spanname="descr">Enables flexible macroblock ordering in the encoded bitstream. It is a technique | |
| 2391 | used for restructuring the ordering of macroblocks in pictures. Applicable to the H264 encoder.</entry> | |
| 2392 | </row> | |
| 2393 | ||
| 2394 | <row><entry></entry></row> | |
| 2395 | <row id="v4l2-mpeg-video-h264-fmo-map-type"> | |
| 2396 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE</constant> </entry> | |
| 2397 | <entry>enum v4l2_mpeg_video_h264_fmo_map_type</entry> | |
| 2398 | </row> | |
| 2399 | <row><entry spanname="descr">When using FMO, the map type divides the image in different scan patterns of macroblocks. | |
| 2400 | Applicable to the H264 encoder. | |
| 2401 | Possible values are:</entry> | |
| 2402 | </row> | |
| 2403 | <row> | |
| 2404 | <entrytbl spanname="descr" cols="2"> | |
| 2405 | <tbody valign="top"> | |
| 2406 | <row> | |
| 2407 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_INTERLEAVED_SLICES</constant> </entry> | |
| 2408 | <entry>Slices are interleaved one after other with macroblocks in run length order.</entry> | |
| 2409 | </row> | |
| 2410 | <row> | |
| 2411 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_SCATTERED_SLICES</constant> </entry> | |
| 2412 | <entry>Scatters the macroblocks based on a mathematical function known to both encoder and decoder.</entry> | |
| 2413 | </row> | |
| 2414 | <row> | |
| 2415 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_FOREGROUND_WITH_LEFT_OVER</constant> </entry> | |
| 2416 | <entry>Macroblocks arranged in rectangular areas or regions of interest.</entry> | |
| 2417 | </row> | |
| 2418 | <row> | |
| 2419 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_BOX_OUT</constant> </entry> | |
| 2420 | <entry>Slice groups grow in a cyclic way from centre to outwards.</entry> | |
| 2421 | </row> | |
| 2422 | <row> | |
| 2423 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_RASTER_SCAN</constant> </entry> | |
| 2424 | <entry>Slice groups grow in raster scan pattern from left to right.</entry> | |
| 2425 | </row> | |
| 2426 | <row> | |
| 2427 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_WIPE_SCAN</constant> </entry> | |
| 2428 | <entry>Slice groups grow in wipe scan pattern from top to bottom.</entry> | |
| 2429 | </row> | |
| 2430 | <row> | |
| 2431 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_EXPLICIT</constant> </entry> | |
| 2432 | <entry>User defined map type.</entry> | |
| 2433 | </row> | |
| 2434 | </tbody> | |
| 2435 | </entrytbl> | |
| 2436 | </row> | |
| 2437 | ||
| 2438 | <row><entry></entry></row> | |
| 2439 | <row> | |
| 2440 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP</constant> </entry> | |
| 2441 | <entry>integer</entry> | |
| 2442 | </row> | |
| 2443 | <row><entry spanname="descr">Number of slice groups in FMO. | |
| 2444 | Applicable to the H264 encoder.</entry> | |
| 2445 | </row> | |
| 2446 | ||
| 2447 | <row><entry></entry></row> | |
| 2448 | <row id="v4l2-mpeg-video-h264-fmo-change-direction"> | |
| 2449 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION</constant> </entry> | |
| 2450 | <entry>enum v4l2_mpeg_video_h264_fmo_change_dir</entry> | |
| 2451 | </row> | |
| 2452 | <row><entry spanname="descr">Specifies a direction of the slice group change for raster and wipe maps. | |
| 2453 | Applicable to the H264 encoder. | |
| 2454 | Possible values are:</entry> | |
| 2455 | </row> | |
| 2456 | <row> | |
| 2457 | <entrytbl spanname="descr" cols="2"> | |
| 2458 | <tbody valign="top"> | |
| 2459 | <row> | |
| 2460 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_CHANGE_DIR_RIGHT</constant> </entry> | |
| 2461 | <entry>Raster scan or wipe right.</entry> | |
| 2462 | </row> | |
| 2463 | <row> | |
| 2464 | <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_CHANGE_DIR_LEFT</constant> </entry> | |
| 2465 | <entry>Reverse raster scan or wipe left.</entry> | |
| 2466 | </row> | |
| 2467 | </tbody> | |
| 2468 | </entrytbl> | |
| 2469 | </row> | |
| 2470 | ||
| 2471 | <row><entry></entry></row> | |
| 2472 | <row> | |
| 2473 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE</constant> </entry> | |
| 2474 | <entry>integer</entry> | |
| 2475 | </row> | |
| 2476 | <row><entry spanname="descr">Specifies the size of the first slice group for raster and wipe map. | |
| 2477 | Applicable to the H264 encoder.</entry> | |
| 2478 | </row> | |
| 2479 | ||
| 2480 | <row><entry></entry></row> | |
| 2481 | <row> | |
| 2482 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH</constant> </entry> | |
| 2483 | <entry>integer</entry> | |
| 2484 | </row> | |
| 2485 | <row><entry spanname="descr">Specifies the number of consecutive macroblocks for the interleaved map. | |
| 2486 | Applicable to the H264 encoder.</entry> | |
| 2487 | </row> | |
| 2488 | ||
| 2489 | <row><entry></entry></row> | |
| 2490 | <row> | |
| 2491 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ASO</constant> </entry> | |
| 2492 | <entry>boolean</entry> | |
| 2493 | </row> | |
| 2494 | <row><entry spanname="descr">Enables arbitrary slice ordering in encoded bitstream. | |
| 2495 | Applicable to the H264 encoder.</entry> | |
| 2496 | </row> | |
| 2497 | ||
| 2498 | <row><entry></entry></row> | |
| 2499 | <row> | |
| 2500 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER</constant> </entry> | |
| 2501 | <entry>integer</entry> | |
| 2502 | </row><row><entry spanname="descr">Specifies the slice order in ASO. Applicable to the H264 encoder. | |
| 2503 | The supplied 32-bit integer is interpreted as follows (bit | |
| 2504 | 0 = least significant bit):</entry> | |
| 2505 | </row> | |
| 2506 | <row> | |
| 2507 | <entrytbl spanname="descr" cols="2"> | |
| 2508 | <tbody valign="top"> | |
| 2509 | <row> | |
| 2510 | <entry>Bit 0:15</entry> | |
| 2511 | <entry>Slice ID</entry> | |
| 2512 | </row> | |
| 2513 | <row> | |
| 2514 | <entry>Bit 16:32</entry> | |
| 2515 | <entry>Slice position or order</entry> | |
| 2516 | </row> | |
| 2517 | </tbody> | |
| 2518 | </entrytbl> | |
| 2519 | </row> | |
| 2520 | ||
| 2521 | <row><entry></entry></row> | |
| 2522 | <row> | |
| 2523 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING</constant> </entry> | |
| 2524 | <entry>boolean</entry> | |
| 2525 | </row> | |
| 2526 | <row><entry spanname="descr">Enables H264 hierarchical coding. | |
| 2527 | Applicable to the H264 encoder.</entry> | |
| 2528 | </row> | |
| 2529 | ||
| 2530 | <row><entry></entry></row> | |
| 2531 | <row id="v4l2-mpeg-video-h264-hierarchical-coding-type"> | |
| 2532 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE</constant> </entry> | |
| 2533 | <entry>enum v4l2_mpeg_video_h264_hierarchical_coding_type</entry> | |
| 2534 | </row> | |
| 2535 | <row><entry spanname="descr">Specifies the hierarchical coding type. | |
| 2536 | Applicable to the H264 encoder. | |
| 2537 | Possible values are:</entry> | |
| 2538 | </row> | |
| 2539 | <row> | |
| 2540 | <entrytbl spanname="descr" cols="2"> | |
| 2541 | <tbody valign="top"> | |
| 2542 | <row> | |
| 2543 | <entry><constant>V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_B</constant> </entry> | |
| 2544 | <entry>Hierarchical B coding.</entry> | |
| 2545 | </row> | |
| 2546 | <row> | |
| 2547 | <entry><constant>V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_P</constant> </entry> | |
| 2548 | <entry>Hierarchical P coding.</entry> | |
| 2549 | </row> | |
| 2550 | </tbody> | |
| 2551 | </entrytbl> | |
| 2552 | </row> | |
| 2553 | ||
| 2554 | <row><entry></entry></row> | |
| 2555 | <row> | |
| 2556 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER</constant> </entry> | |
| 2557 | <entry>integer</entry> | |
| 2558 | </row> | |
| 2559 | <row><entry spanname="descr">Specifies the number of hierarchical coding layers. | |
| 2560 | Applicable to the H264 encoder.</entry> | |
| 2561 | </row> | |
| 2562 | ||
| 2563 | <row><entry></entry></row> | |
| 2564 | <row> | |
| 2565 | <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP</constant> </entry> | |
| 2566 | <entry>integer</entry> | |
| 2567 | </row><row><entry spanname="descr">Specifies a user defined QP for each layer. Applicable to the H264 encoder. | |
| 2568 | The supplied 32-bit integer is interpreted as follows (bit | |
| 2569 | 0 = least significant bit):</entry> | |
| 2570 | </row> | |
| 2571 | <row> | |
| 2572 | <entrytbl spanname="descr" cols="2"> | |
| 2573 | <tbody valign="top"> | |
| 2574 | <row> | |
| 2575 | <entry>Bit 0:15</entry> | |
| 2576 | <entry>QP value</entry> | |
| 2577 | </row> | |
| 2578 | <row> | |
| 2579 | <entry>Bit 16:32</entry> | |
| 2580 | <entry>Layer number</entry> | |
| 2581 | </row> | |
| 2582 | </tbody> | |
| 2583 | </entrytbl> | |
| 2584 | </row> | |
| e65e4f13 KD |
2585 | |
| 2586 | </tbody> | |
| 2587 | </tgroup> | |
| 2588 | </table> | |
| 2589 | </section> | |
| 2590 | ||
| 2591 | <section> | |
| 2592 | <title>MFC 5.1 MPEG Controls</title> | |
| 2593 | ||
| 2594 | <para>The following MPEG class controls deal with MPEG | |
| 2595 | decoding and encoding settings that are specific to the Multi Format Codec 5.1 device present | |
| 2596 | in the S5P family of SoCs by Samsung. | |
| 2597 | </para> | |
| 2598 | ||
| 2599 | <table pgwide="1" frame="none" id="mfc51-control-id"> | |
| 2600 | <title>MFC 5.1 Control IDs</title> | |
| 2601 | <tgroup cols="4"> | |
| 2602 | <colspec colname="c1" colwidth="1*" /> | |
| 2603 | <colspec colname="c2" colwidth="6*" /> | |
| 2604 | <colspec colname="c3" colwidth="2*" /> | |
| 2605 | <colspec colname="c4" colwidth="6*" /> | |
| 2606 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 2607 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 2608 | <thead> | |
| 2609 | <row> | |
| 2610 | <entry spanname="id" align="left">ID</entry> | |
| 2611 | <entry align="left">Type</entry> | |
| 2612 | </row><row><entry spanname="descr" align="left">Description</entry> | |
| 2613 | </row> | |
| 2614 | </thead> | |
| 2615 | <tbody valign="top"> | |
| 2616 | <row><entry></entry></row> | |
| 2617 | <row> | |
| 2618 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY_ENABLE</constant> </entry> | |
| 2619 | <entry>integer</entry> | |
| 2620 | </row><row><entry spanname="descr">If the display delay is enabled then the decoder has to return a | |
| 2621 | CAPTURE buffer after processing a certain number of OUTPUT buffers. If this number is low, then it may result in | |
| 2622 | buffers not being dequeued in display order. In addition hardware may still use those buffers as reference, thus | |
| 2623 | application should not write to those buffers. This feature can be used for example for generating thumbnails of videos. | |
| 2624 | Applicable to the H264 decoder. | |
| 2625 | </entry> | |
| 2626 | </row> | |
| 2627 | <row><entry></entry></row> | |
| 2628 | <row> | |
| 2629 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_DECODER_H264_DISPLAY_DELAY</constant> </entry> | |
| 2630 | <entry>integer</entry> | |
| 2631 | </row><row><entry spanname="descr">Display delay value for H264 decoder. | |
| 2632 | The decoder is forced to return a decoded frame after the set 'display delay' number of frames. If this number is | |
| 2633 | low it may result in frames returned out of dispaly order, in addition the hardware may still be using the returned buffer | |
| 2634 | as a reference picture for subsequent frames. | |
| 2635 | </entry> | |
| 2636 | </row> | |
| 2637 | <row><entry></entry></row> | |
| 2638 | <row> | |
| 2639 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_NUM_REF_PIC_FOR_P</constant> </entry> | |
| 2640 | <entry>integer</entry> | |
| 2641 | </row><row><entry spanname="descr">The number of reference pictures used for encoding a P picture. | |
| 2642 | Applicable to the H264 encoder.</entry> | |
| 2643 | </row> | |
| 2644 | <row><entry></entry></row> | |
| 2645 | <row> | |
| 2646 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_PADDING</constant> </entry> | |
| 2647 | <entry>boolean</entry> | |
| 2648 | </row><row><entry spanname="descr">Padding enable in the encoder - use a color instead of repeating border pixels. | |
| 2649 | Applicable to encoders.</entry> | |
| 2650 | </row> | |
| 2651 | <row><entry></entry></row> | |
| 2652 | <row> | |
| 2653 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_PADDING_YUV</constant> </entry> | |
| 2654 | <entry>integer</entry> | |
| 2655 | </row><row><entry spanname="descr">Padding color in the encoder. Applicable to encoders. The supplied 32-bit integer is interpreted as follows (bit | |
| 2656 | 0 = least significant bit):</entry> | |
| 2657 | </row> | |
| 2658 | <row> | |
| 2659 | <entrytbl spanname="descr" cols="2"> | |
| 2660 | <tbody valign="top"> | |
| 2661 | <row> | |
| 2662 | <entry>Bit 0:7</entry> | |
| 2663 | <entry>V chrominance information</entry> | |
| 2664 | </row> | |
| 2665 | <row> | |
| 2666 | <entry>Bit 8:15</entry> | |
| 2667 | <entry>U chrominance information</entry> | |
| 2668 | </row> | |
| 2669 | <row> | |
| 2670 | <entry>Bit 16:23</entry> | |
| 2671 | <entry>Y luminance information</entry> | |
| 2672 | </row> | |
| 2673 | <row> | |
| 2674 | <entry>Bit 24:31</entry> | |
| 2675 | <entry>Must be zero.</entry> | |
| 2676 | </row> | |
| 2677 | </tbody> | |
| 2678 | </entrytbl> | |
| 2679 | </row> | |
| 2680 | <row><entry></entry></row> | |
| 2681 | <row> | |
| 2682 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_RC_REACTION_COEFF</constant> </entry> | |
| 2683 | <entry>integer</entry> | |
| 2684 | </row><row><entry spanname="descr">Reaction coefficient for MFC rate control. Applicable to encoders. | |
| 2685 | <para>Note 1: Valid only when the frame level RC is enabled.</para> | |
| 2686 | <para>Note 2: For tight CBR, this field must be small (ex. 2 ~ 10). | |
| 2687 | For VBR, this field must be large (ex. 100 ~ 1000).</para> | |
| 2688 | <para>Note 3: It is not recommended to use the greater number than FRAME_RATE * (10^9 / BIT_RATE).</para> | |
| 2689 | </entry> | |
| 2690 | </row> | |
| 2691 | <row><entry></entry></row> | |
| 2692 | <row> | |
| 2693 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_DARK</constant> </entry> | |
| 2694 | <entry>boolean</entry> | |
| 2695 | </row><row><entry spanname="descr">Adaptive rate control for dark region. | |
| 2696 | Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>). | |
| 2697 | Applicable to the H264 encoder.</entry> | |
| 2698 | </row> | |
| 2699 | <row><entry></entry></row> | |
| 2700 | <row> | |
| 2701 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_SMOOTH</constant> </entry> | |
| 2702 | <entry>boolean</entry> | |
| 2703 | </row><row><entry spanname="descr">Adaptive rate control for smooth region. | |
| 2704 | Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>). | |
| 2705 | Applicable to the H264 encoder.</entry> | |
| 2706 | </row> | |
| 2707 | <row><entry></entry></row> | |
| 2708 | <row> | |
| 2709 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_STATIC</constant> </entry> | |
| 2710 | <entry>boolean</entry> | |
| 2711 | </row><row><entry spanname="descr">Adaptive rate control for static region. | |
| 2712 | Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>). | |
| 2713 | Applicable to the H264 encoder.</entry> | |
| 2714 | </row> | |
| 2715 | <row><entry></entry></row> | |
| 2716 | <row> | |
| 2717 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_H264_ADAPTIVE_RC_ACTIVITY</constant> </entry> | |
| 2718 | <entry>boolean</entry> | |
| 2719 | </row><row><entry spanname="descr">Adaptive rate control for activity region. | |
| 2720 | Valid only when H.264 and macroblock level RC is enabled (<constant>V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE</constant>). | |
| 2721 | Applicable to the H264 encoder.</entry> | |
| 2722 | </row> | |
| 2723 | <row><entry></entry></row> | |
| 6a02a330 | 2724 | <row id="v4l2-mpeg-mfc51-video-frame-skip-mode"> |
| e65e4f13 | 2725 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_FRAME_SKIP_MODE</constant> </entry> |
| 6a02a330 | 2726 | <entry>enum v4l2_mpeg_mfc51_video_frame_skip_mode</entry> |
| e65e4f13 KD |
2727 | </row> |
| 2728 | <row><entry spanname="descr"> | |
| 2729 | Indicates in what conditions the encoder should skip frames. If encoding a frame would cause the encoded stream to be larger then | |
| 2730 | a chosen data limit then the frame will be skipped. | |
| 2731 | Possible values are:</entry> | |
| 2732 | </row> | |
| 2733 | <row> | |
| 2734 | <entrytbl spanname="descr" cols="2"> | |
| 2735 | <tbody valign="top"> | |
| 2736 | <row> | |
| 2737 | <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_DISABLED</constant> </entry> | |
| 2738 | <entry>Frame skip mode is disabled.</entry> | |
| 2739 | </row> | |
| 2740 | <row> | |
| 2741 | <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_LEVEL_LIMIT</constant> </entry> | |
| 2742 | <entry>Frame skip mode enabled and buffer limit is set by the chosen level and is defined by the standard.</entry> | |
| 2743 | </row> | |
| 2744 | <row> | |
| 2745 | <entry><constant>V4L2_MPEG_MFC51_FRAME_SKIP_MODE_BUF_LIMIT</constant> </entry> | |
| 2746 | <entry>Frame skip mode enabled and buffer limit is set by the VBV (MPEG1/2/4) or CPB (H264) buffer size control.</entry> | |
| 2747 | </row> | |
| 2748 | </tbody> | |
| 2749 | </entrytbl> | |
| 2750 | </row> | |
| 2751 | <row><entry></entry></row> | |
| 2752 | <row> | |
| 2753 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_RC_FIXED_TARGET_BIT</constant> </entry> | |
| 2754 | <entry>integer</entry> | |
| 2755 | </row><row><entry spanname="descr">Enable rate-control with fixed target bit. | |
| 2756 | If this setting is enabled, then the rate control logic of the encoder will calculate the average bitrate | |
| 2757 | for a GOP and keep it below or equal the set bitrate target. Otherwise the rate control logic calculates the | |
| 2758 | overall average bitrate for the stream and keeps it below or equal to the set bitrate. In the first case | |
| 2759 | the average bitrate for the whole stream will be smaller then the set bitrate. This is caused because the | |
| 2760 | average is calculated for smaller number of frames, on the other hand enabling this setting will ensure that | |
| 2761 | the stream will meet tight bandwidth contraints. Applicable to encoders. | |
| 2762 | </entry> | |
| 2763 | </row> | |
| 2764 | <row><entry></entry></row> | |
| 6a02a330 | 2765 | <row id="v4l2-mpeg-mfc51-video-force-frame-type"> |
| e65e4f13 | 2766 | <entry spanname="id"><constant>V4L2_CID_MPEG_MFC51_VIDEO_FORCE_FRAME_TYPE</constant> </entry> |
| 6a02a330 | 2767 | <entry>enum v4l2_mpeg_mfc51_video_force_frame_type</entry> |
| e65e4f13 KD |
2768 | </row> |
| 2769 | <row><entry spanname="descr">Force a frame type for the next queued buffer. Applicable to encoders. | |
| 2770 | Possible values are:</entry> | |
| 2771 | </row> | |
| 2772 | <row> | |
| 2773 | <entrytbl spanname="descr" cols="2"> | |
| 2774 | <tbody valign="top"> | |
| 2775 | <row> | |
| 2776 | <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_DISABLED</constant> </entry> | |
| 2777 | <entry>Forcing a specific frame type disabled.</entry> | |
| 2778 | </row> | |
| 2779 | <row> | |
| 2780 | <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_I_FRAME</constant> </entry> | |
| 2781 | <entry>Force an I-frame.</entry> | |
| 2782 | </row> | |
| 2783 | <row> | |
| 2784 | <entry><constant>V4L2_MPEG_MFC51_FORCE_FRAME_TYPE_NOT_CODED</constant> </entry> | |
| 2785 | <entry>Force a non-coded frame.</entry> | |
| 2786 | </row> | |
| 2787 | </tbody> | |
| 2788 | </entrytbl> | |
| 2789 | </row> | |
| 8e080c2e MCC |
2790 | </tbody> |
| 2791 | </tgroup> | |
| 2792 | </table> | |
| 2793 | </section> | |
| 2794 | ||
| 2795 | <section> | |
| 2796 | <title>CX2341x MPEG Controls</title> | |
| 2797 | ||
| 2798 | <para>The following MPEG class controls deal with MPEG | |
| 2799 | encoding settings that are specific to the Conexant CX23415 and | |
| 2800 | CX23416 MPEG encoding chips.</para> | |
| 2801 | ||
| 2802 | <table pgwide="1" frame="none" id="cx2341x-control-id"> | |
| 2803 | <title>CX2341x Control IDs</title> | |
| 2804 | <tgroup cols="4"> | |
| 2805 | <colspec colname="c1" colwidth="1*" /> | |
| 2806 | <colspec colname="c2" colwidth="6*" /> | |
| 2807 | <colspec colname="c3" colwidth="2*" /> | |
| 2808 | <colspec colname="c4" colwidth="6*" /> | |
| 2809 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 2810 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 2811 | <thead> | |
| 2812 | <row> | |
| 2813 | <entry spanname="id" align="left">ID</entry> | |
| 2814 | <entry align="left">Type</entry> | |
| 2815 | </row><row><entry spanname="descr" align="left">Description</entry> | |
| 2816 | </row> | |
| 2817 | </thead> | |
| 2818 | <tbody valign="top"> | |
| 2819 | <row><entry></entry></row> | |
| 2820 | <row id="v4l2-mpeg-cx2341x-video-spatial-filter-mode"> | |
| 2821 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE</constant> </entry> | |
| 2822 | <entry>enum v4l2_mpeg_cx2341x_video_spatial_filter_mode</entry> | |
| 2823 | </row><row><entry spanname="descr">Sets the Spatial | |
| 2824 | Filter mode (default <constant>MANUAL</constant>). Possible values | |
| 2825 | are:</entry> | |
| 2826 | </row> | |
| 2827 | <row> | |
| 2828 | <entrytbl spanname="descr" cols="2"> | |
| 2829 | <tbody valign="top"> | |
| 2830 | <row> | |
| 2831 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_MANUAL</constant> </entry> | |
| 2832 | <entry>Choose the filter manually</entry> | |
| 2833 | </row> | |
| 2834 | <row> | |
| 2835 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE_AUTO</constant> </entry> | |
| 2836 | <entry>Choose the filter automatically</entry> | |
| 2837 | </row> | |
| 2838 | </tbody> | |
| 2839 | </entrytbl> | |
| 2840 | </row> | |
| 2841 | <row><entry></entry></row> | |
| 2842 | <row> | |
| 2843 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER</constant> </entry> | |
| 2844 | <entry>integer (0-15)</entry> | |
| 2845 | </row><row><entry spanname="descr">The setting for the | |
| 2846 | Spatial Filter. 0 = off, 15 = maximum. (Default is 0.)</entry> | |
| 2847 | </row> | |
| 2848 | <row><entry></entry></row> | |
| 2849 | <row id="luma-spatial-filter-type"> | |
| 2850 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE</constant> </entry> | |
| 2851 | <entry>enum v4l2_mpeg_cx2341x_video_luma_spatial_filter_type</entry> | |
| 2852 | </row><row><entry spanname="descr">Select the algorithm | |
| 2853 | to use for the Luma Spatial Filter (default | |
| 2854 | <constant>1D_HOR</constant>). Possible values:</entry> | |
| 2855 | </row> | |
| 2856 | <row> | |
| 2857 | <entrytbl spanname="descr" cols="2"> | |
| 2858 | <tbody valign="top"> | |
| 2859 | <row> | |
| 2860 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_OFF</constant> </entry> | |
| 2861 | <entry>No filter</entry> | |
| 2862 | </row> | |
| 2863 | <row> | |
| 2864 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_HOR</constant> </entry> | |
| 2865 | <entry>One-dimensional horizontal</entry> | |
| 2866 | </row> | |
| 2867 | <row> | |
| 2868 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_1D_VERT</constant> </entry> | |
| 2869 | <entry>One-dimensional vertical</entry> | |
| 2870 | </row> | |
| 2871 | <row> | |
| 2872 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_HV_SEPARABLE</constant> </entry> | |
| 2873 | <entry>Two-dimensional separable</entry> | |
| 2874 | </row> | |
| 2875 | <row> | |
| 2876 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_LUMA_SPATIAL_FILTER_TYPE_2D_SYM_NON_SEPARABLE</constant> </entry> | |
| 2877 | <entry>Two-dimensional symmetrical | |
| 2878 | non-separable</entry> | |
| 2879 | </row> | |
| 2880 | </tbody> | |
| 2881 | </entrytbl> | |
| 2882 | </row> | |
| 2883 | <row><entry></entry></row> | |
| 2884 | <row id="chroma-spatial-filter-type"> | |
| 2885 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE</constant> </entry> | |
| 2886 | <entry>enum v4l2_mpeg_cx2341x_video_chroma_spatial_filter_type</entry> | |
| 2887 | </row><row><entry spanname="descr">Select the algorithm | |
| 2888 | for the Chroma Spatial Filter (default <constant>1D_HOR</constant>). | |
| 2889 | Possible values are:</entry> | |
| 2890 | </row> | |
| 2891 | <row> | |
| 2892 | <entrytbl spanname="descr" cols="2"> | |
| 2893 | <tbody valign="top"> | |
| 2894 | <row> | |
| 2895 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_OFF</constant> </entry> | |
| 2896 | <entry>No filter</entry> | |
| 2897 | </row> | |
| 2898 | <row> | |
| 2899 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_CHROMA_SPATIAL_FILTER_TYPE_1D_HOR</constant> </entry> | |
| 2900 | <entry>One-dimensional horizontal</entry> | |
| 2901 | </row> | |
| 2902 | </tbody> | |
| 2903 | </entrytbl> | |
| 2904 | </row> | |
| 2905 | <row><entry></entry></row> | |
| 2906 | <row id="v4l2-mpeg-cx2341x-video-temporal-filter-mode"> | |
| 2907 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE</constant> </entry> | |
| 2908 | <entry>enum v4l2_mpeg_cx2341x_video_temporal_filter_mode</entry> | |
| 2909 | </row><row><entry spanname="descr">Sets the Temporal | |
| 2910 | Filter mode (default <constant>MANUAL</constant>). Possible values | |
| 2911 | are:</entry> | |
| 2912 | </row> | |
| 2913 | <row> | |
| 2914 | <entrytbl spanname="descr" cols="2"> | |
| 2915 | <tbody valign="top"> | |
| 2916 | <row> | |
| 2917 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_MANUAL</constant> </entry> | |
| 2918 | <entry>Choose the filter manually</entry> | |
| 2919 | </row> | |
| 2920 | <row> | |
| 2921 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER_MODE_AUTO</constant> </entry> | |
| 2922 | <entry>Choose the filter automatically</entry> | |
| 2923 | </row> | |
| 2924 | </tbody> | |
| 2925 | </entrytbl> | |
| 2926 | </row> | |
| 2927 | <row><entry></entry></row> | |
| 2928 | <row> | |
| 2929 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_TEMPORAL_FILTER</constant> </entry> | |
| 2930 | <entry>integer (0-31)</entry> | |
| 2931 | </row><row><entry spanname="descr">The setting for the | |
| 2932 | Temporal Filter. 0 = off, 31 = maximum. (Default is 8 for full-scale | |
| 2933 | capturing and 0 for scaled capturing.)</entry> | |
| 2934 | </row> | |
| 2935 | <row><entry></entry></row> | |
| 2936 | <row id="v4l2-mpeg-cx2341x-video-median-filter-type"> | |
| 2937 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE</constant> </entry> | |
| 2938 | <entry>enum v4l2_mpeg_cx2341x_video_median_filter_type</entry> | |
| 2939 | </row><row><entry spanname="descr">Median Filter Type | |
| 2940 | (default <constant>OFF</constant>). Possible values are:</entry> | |
| 2941 | </row> | |
| 2942 | <row> | |
| 2943 | <entrytbl spanname="descr" cols="2"> | |
| 2944 | <tbody valign="top"> | |
| 2945 | <row> | |
| 2946 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_OFF</constant> </entry> | |
| 2947 | <entry>No filter</entry> | |
| 2948 | </row> | |
| 2949 | <row> | |
| 2950 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR</constant> </entry> | |
| 2951 | <entry>Horizontal filter</entry> | |
| 2952 | </row> | |
| 2953 | <row> | |
| 2954 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_VERT</constant> </entry> | |
| 2955 | <entry>Vertical filter</entry> | |
| 2956 | </row> | |
| 2957 | <row> | |
| 2958 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_HOR_VERT</constant> </entry> | |
| 2959 | <entry>Horizontal and vertical filter</entry> | |
| 2960 | </row> | |
| 2961 | <row> | |
| 2962 | <entry><constant>V4L2_MPEG_CX2341X_VIDEO_MEDIAN_FILTER_TYPE_DIAG</constant> </entry> | |
| 2963 | <entry>Diagonal filter</entry> | |
| 2964 | </row> | |
| 2965 | </tbody> | |
| 2966 | </entrytbl> | |
| 2967 | </row> | |
| 2968 | <row><entry></entry></row> | |
| 2969 | <row> | |
| 2970 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_BOTTOM</constant> </entry> | |
| 2971 | <entry>integer (0-255)</entry> | |
| 2972 | </row><row><entry spanname="descr">Threshold above which | |
| 2973 | the luminance median filter is enabled (default 0)</entry> | |
| 2974 | </row> | |
| 2975 | <row><entry></entry></row> | |
| 2976 | <row> | |
| 2977 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_LUMA_MEDIAN_FILTER_TOP</constant> </entry> | |
| 2978 | <entry>integer (0-255)</entry> | |
| 2979 | </row><row><entry spanname="descr">Threshold below which | |
| 2980 | the luminance median filter is enabled (default 255)</entry> | |
| 2981 | </row> | |
| 2982 | <row><entry></entry></row> | |
| 2983 | <row> | |
| 2984 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_BOTTOM</constant> </entry> | |
| 2985 | <entry>integer (0-255)</entry> | |
| 2986 | </row><row><entry spanname="descr">Threshold above which | |
| 2987 | the chroma median filter is enabled (default 0)</entry> | |
| 2988 | </row> | |
| 2989 | <row><entry></entry></row> | |
| 2990 | <row> | |
| 2991 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_VIDEO_CHROMA_MEDIAN_FILTER_TOP</constant> </entry> | |
| 2992 | <entry>integer (0-255)</entry> | |
| 2993 | </row><row><entry spanname="descr">Threshold below which | |
| 2994 | the chroma median filter is enabled (default 255)</entry> | |
| 2995 | </row> | |
| 2996 | <row><entry></entry></row> | |
| 2997 | <row> | |
| 2998 | <entry spanname="id"><constant>V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS</constant> </entry> | |
| 2999 | <entry>boolean</entry> | |
| 3000 | </row> | |
| 3001 | <row><entry spanname="descr">The CX2341X MPEG encoder | |
| 3002 | can insert one empty MPEG-2 PES packet into the stream between every | |
| 3003 | four video frames. The packet size is 2048 bytes, including the | |
| 3004 | packet_start_code_prefix and stream_id fields. The stream_id is 0xBF | |
| 3005 | (private stream 2). The payload consists of 0x00 bytes, to be filled | |
| 3006 | in by the application. 0 = do not insert, 1 = insert packets.</entry> | |
| 3007 | </row> | |
| 3008 | </tbody> | |
| 3009 | </tgroup> | |
| 3010 | </table> | |
| 3011 | </section> | |
| 3012 | </section> | |
| 3013 | ||
| 3014 | <section id="camera-controls"> | |
| 3015 | <title>Camera Control Reference</title> | |
| 3016 | ||
| 3017 | <para>The Camera class includes controls for mechanical (or | |
| 3018 | equivalent digital) features of a device such as controllable lenses | |
| 3019 | or sensors.</para> | |
| 3020 | ||
| 3021 | <table pgwide="1" frame="none" id="camera-control-id"> | |
| 3022 | <title>Camera Control IDs</title> | |
| 3023 | <tgroup cols="4"> | |
| 3024 | <colspec colname="c1" colwidth="1*" /> | |
| 3025 | <colspec colname="c2" colwidth="6*" /> | |
| 3026 | <colspec colname="c3" colwidth="2*" /> | |
| 3027 | <colspec colname="c4" colwidth="6*" /> | |
| 3028 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 3029 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 3030 | <thead> | |
| 3031 | <row> | |
| 3032 | <entry spanname="id" align="left">ID</entry> | |
| 3033 | <entry align="left">Type</entry> | |
| 3034 | </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> | |
| 3035 | </row> | |
| 3036 | </thead> | |
| 3037 | <tbody valign="top"> | |
| 3038 | <row><entry></entry></row> | |
| 3039 | <row> | |
| 3040 | <entry spanname="id"><constant>V4L2_CID_CAMERA_CLASS</constant> </entry> | |
| 3041 | <entry>class</entry> | |
| 3042 | </row><row><entry spanname="descr">The Camera class | |
| 3043 | descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a | |
| 3044 | description of this control class.</entry> | |
| 3045 | </row> | |
| 3046 | <row><entry></entry></row> | |
| 3047 | ||
| 3048 | <row id="v4l2-exposure-auto-type"> | |
| 3049 | <entry spanname="id"><constant>V4L2_CID_EXPOSURE_AUTO</constant> </entry> | |
| 3050 | <entry>enum v4l2_exposure_auto_type</entry> | |
| 3051 | </row><row><entry spanname="descr">Enables automatic | |
| 3052 | adjustments of the exposure time and/or iris aperture. The effect of | |
| 3053 | manual changes of the exposure time or iris aperture while these | |
| 3054 | features are enabled is undefined, drivers should ignore such | |
| 3055 | requests. Possible values are:</entry> | |
| 3056 | </row> | |
| 3057 | <row> | |
| 3058 | <entrytbl spanname="descr" cols="2"> | |
| 3059 | <tbody valign="top"> | |
| 3060 | <row> | |
| 3061 | <entry><constant>V4L2_EXPOSURE_AUTO</constant> </entry> | |
| 3062 | <entry>Automatic exposure time, automatic iris | |
| 3063 | aperture.</entry> | |
| 3064 | </row> | |
| 3065 | <row> | |
| 3066 | <entry><constant>V4L2_EXPOSURE_MANUAL</constant> </entry> | |
| 3067 | <entry>Manual exposure time, manual iris.</entry> | |
| 3068 | </row> | |
| 3069 | <row> | |
| 3070 | <entry><constant>V4L2_EXPOSURE_SHUTTER_PRIORITY</constant> </entry> | |
| 3071 | <entry>Manual exposure time, auto iris.</entry> | |
| 3072 | </row> | |
| 3073 | <row> | |
| 3074 | <entry><constant>V4L2_EXPOSURE_APERTURE_PRIORITY</constant> </entry> | |
| 3075 | <entry>Auto exposure time, manual iris.</entry> | |
| 3076 | </row> | |
| 3077 | </tbody> | |
| 3078 | </entrytbl> | |
| 3079 | </row> | |
| 3080 | <row><entry></entry></row> | |
| 3081 | ||
| 3082 | <row> | |
| 3083 | <entry spanname="id"><constant>V4L2_CID_EXPOSURE_ABSOLUTE</constant> </entry> | |
| 3084 | <entry>integer</entry> | |
| 3085 | </row><row><entry spanname="descr">Determines the exposure | |
| 3086 | time of the camera sensor. The exposure time is limited by the frame | |
| 3087 | interval. Drivers should interpret the values as 100 µs units, | |
| 3088 | where the value 1 stands for 1/10000th of a second, 10000 for 1 second | |
| 3089 | and 100000 for 10 seconds.</entry> | |
| 3090 | </row> | |
| 3091 | <row><entry></entry></row> | |
| 3092 | ||
| 3093 | <row> | |
| 3094 | <entry spanname="id"><constant>V4L2_CID_EXPOSURE_AUTO_PRIORITY</constant> </entry> | |
| 3095 | <entry>boolean</entry> | |
| 3096 | </row><row><entry spanname="descr">When | |
| 3097 | <constant>V4L2_CID_EXPOSURE_AUTO</constant> is set to | |
| 3098 | <constant>AUTO</constant> or <constant>APERTURE_PRIORITY</constant>, | |
| 3099 | this control determines if the device may dynamically vary the frame | |
| 3100 | rate. By default this feature is disabled (0) and the frame rate must | |
| 3101 | remain constant.</entry> | |
| 3102 | </row> | |
| 3103 | <row><entry></entry></row> | |
| 3104 | ||
| d58083c9 SN |
3105 | <row> |
| 3106 | <entry spanname="id"><constant>V4L2_CID_EXPOSURE_BIAS</constant> </entry> | |
| 3107 | <entry>integer menu</entry> | |
| 3108 | </row><row><entry spanname="descr"> Determines the automatic | |
| 3109 | exposure compensation, it is effective only when <constant>V4L2_CID_EXPOSURE_AUTO</constant> | |
| 3110 | control is set to <constant>AUTO</constant>, <constant>SHUTTER_PRIORITY </constant> | |
| 3111 | or <constant>APERTURE_PRIORITY</constant>. | |
| 3112 | It is expressed in terms of EV, drivers should interpret the values as 0.001 EV | |
| 3113 | units, where the value 1000 stands for +1 EV. | |
| 3114 | <para>Increasing the exposure compensation value is equivalent to decreasing | |
| 3115 | the exposure value (EV) and will increase the amount of light at the image | |
| 3116 | sensor. The camera performs the exposure compensation by adjusting absolute | |
| 3117 | exposure time and/or aperture.</para></entry> | |
| 3118 | </row> | |
| 3119 | <row><entry></entry></row> | |
| 3120 | ||
| cf072139 SN |
3121 | <row id="v4l2-exposure-metering"> |
| 3122 | <entry spanname="id"><constant>V4L2_CID_EXPOSURE_METERING</constant> </entry> | |
| 3123 | <entry>enum v4l2_exposure_metering</entry> | |
| 3124 | </row><row><entry spanname="descr">Determines how the camera measures | |
| 3125 | the amount of light available for the frame exposure. Possible values are:</entry> | |
| 3126 | </row> | |
| 3127 | <row> | |
| 3128 | <entrytbl spanname="descr" cols="2"> | |
| 3129 | <tbody valign="top"> | |
| 3130 | <row> | |
| 3131 | <entry><constant>V4L2_EXPOSURE_METERING_AVERAGE</constant> </entry> | |
| 3132 | <entry>Use the light information coming from the entire frame | |
| 3133 | and average giving no weighting to any particular portion of the metered area. | |
| 3134 | </entry> | |
| 3135 | </row> | |
| 3136 | <row> | |
| 3137 | <entry><constant>V4L2_EXPOSURE_METERING_CENTER_WEIGHTED</constant> </entry> | |
| 3138 | <entry>Average the light information coming from the entire frame | |
| 3139 | giving priority to the center of the metered area.</entry> | |
| 3140 | </row> | |
| 3141 | <row> | |
| 3142 | <entry><constant>V4L2_EXPOSURE_METERING_SPOT</constant> </entry> | |
| 3143 | <entry>Measure only very small area at the center of the frame.</entry> | |
| 3144 | </row> | |
| 3145 | </tbody> | |
| 3146 | </entrytbl> | |
| 3147 | </row> | |
| 3148 | <row><entry></entry></row> | |
| 3149 | ||
| 8e080c2e MCC |
3150 | <row> |
| 3151 | <entry spanname="id"><constant>V4L2_CID_PAN_RELATIVE</constant> </entry> | |
| 3152 | <entry>integer</entry> | |
| 3153 | </row><row><entry spanname="descr">This control turns the | |
| 3154 | camera horizontally by the specified amount. The unit is undefined. A | |
| 3155 | positive value moves the camera to the right (clockwise when viewed | |
| 3156 | from above), a negative value to the left. A value of zero does not | |
| 3157 | cause motion. This is a write-only control.</entry> | |
| 3158 | </row> | |
| 3159 | <row><entry></entry></row> | |
| 3160 | ||
| 3161 | <row> | |
| 3162 | <entry spanname="id"><constant>V4L2_CID_TILT_RELATIVE</constant> </entry> | |
| 3163 | <entry>integer</entry> | |
| 3164 | </row><row><entry spanname="descr">This control turns the | |
| 3165 | camera vertically by the specified amount. The unit is undefined. A | |
| 3166 | positive value moves the camera up, a negative value down. A value of | |
| 3167 | zero does not cause motion. This is a write-only control.</entry> | |
| 3168 | </row> | |
| 3169 | <row><entry></entry></row> | |
| 3170 | ||
| 3171 | <row> | |
| 3172 | <entry spanname="id"><constant>V4L2_CID_PAN_RESET</constant> </entry> | |
| 3173 | <entry>button</entry> | |
| 3174 | </row><row><entry spanname="descr">When this control is set, | |
| 3175 | the camera moves horizontally to the default position.</entry> | |
| 3176 | </row> | |
| 3177 | <row><entry></entry></row> | |
| 3178 | ||
| 3179 | <row> | |
| 3180 | <entry spanname="id"><constant>V4L2_CID_TILT_RESET</constant> </entry> | |
| 3181 | <entry>button</entry> | |
| 3182 | </row><row><entry spanname="descr">When this control is set, | |
| 3183 | the camera moves vertically to the default position.</entry> | |
| 3184 | </row> | |
| 3185 | <row><entry></entry></row> | |
| 3186 | ||
| 3187 | <row> | |
| 3188 | <entry spanname="id"><constant>V4L2_CID_PAN_ABSOLUTE</constant> </entry> | |
| 3189 | <entry>integer</entry> | |
| 3190 | </row><row><entry spanname="descr">This control | |
| 3191 | turns the camera horizontally to the specified position. Positive | |
| 3192 | values move the camera to the right (clockwise when viewed from above), | |
| 3193 | negative values to the left. Drivers should interpret the values as arc | |
| 3194 | seconds, with valid values between -180 * 3600 and +180 * 3600 | |
| 3195 | inclusive.</entry> | |
| 3196 | </row> | |
| 3197 | <row><entry></entry></row> | |
| 3198 | ||
| 3199 | <row> | |
| 3200 | <entry spanname="id"><constant>V4L2_CID_TILT_ABSOLUTE</constant> </entry> | |
| 3201 | <entry>integer</entry> | |
| 3202 | </row><row><entry spanname="descr">This control | |
| 3203 | turns the camera vertically to the specified position. Positive values | |
| 3204 | move the camera up, negative values down. Drivers should interpret the | |
| 3205 | values as arc seconds, with valid values between -180 * 3600 and +180 | |
| 3206 | * 3600 inclusive.</entry> | |
| 3207 | </row> | |
| 3208 | <row><entry></entry></row> | |
| 3209 | ||
| 3210 | <row> | |
| 3211 | <entry spanname="id"><constant>V4L2_CID_FOCUS_ABSOLUTE</constant> </entry> | |
| 3212 | <entry>integer</entry> | |
| 3213 | </row><row><entry spanname="descr">This control sets the | |
| 3214 | focal point of the camera to the specified position. The unit is | |
| 3215 | undefined. Positive values set the focus closer to the camera, | |
| 3216 | negative values towards infinity.</entry> | |
| 3217 | </row> | |
| 3218 | <row><entry></entry></row> | |
| 3219 | ||
| 3220 | <row> | |
| 3221 | <entry spanname="id"><constant>V4L2_CID_FOCUS_RELATIVE</constant> </entry> | |
| 3222 | <entry>integer</entry> | |
| 3223 | </row><row><entry spanname="descr">This control moves the | |
| 3224 | focal point of the camera by the specified amount. The unit is | |
| 3225 | undefined. Positive values move the focus closer to the camera, | |
| 3226 | negative values towards infinity. This is a write-only control.</entry> | |
| 3227 | </row> | |
| 3228 | <row><entry></entry></row> | |
| 3229 | ||
| 3230 | <row> | |
| 3231 | <entry spanname="id"><constant>V4L2_CID_FOCUS_AUTO</constant> </entry> | |
| 3232 | <entry>boolean</entry> | |
| 2272ab65 SN |
3233 | </row><row><entry spanname="descr">Enables continuous automatic |
| 3234 | focus adjustments. The effect of manual focus adjustments while this feature | |
| 8e080c2e MCC |
3235 | is enabled is undefined, drivers should ignore such requests.</entry> |
| 3236 | </row> | |
| 3237 | <row><entry></entry></row> | |
| 3238 | ||
| 2272ab65 SN |
3239 | <row> |
| 3240 | <entry spanname="id"><constant>V4L2_CID_AUTO_FOCUS_START</constant> </entry> | |
| 3241 | <entry>button</entry> | |
| 3242 | </row><row><entry spanname="descr">Starts single auto focus process. | |
| 3243 | The effect of setting this control when <constant>V4L2_CID_FOCUS_AUTO</constant> | |
| 3244 | is set to <constant>TRUE</constant> (1) is undefined, drivers should ignore | |
| 3245 | such requests.</entry> | |
| 3246 | </row> | |
| 3247 | <row><entry></entry></row> | |
| 3248 | ||
| 3249 | <row> | |
| 3250 | <entry spanname="id"><constant>V4L2_CID_AUTO_FOCUS_STOP</constant> </entry> | |
| 3251 | <entry>button</entry> | |
| 3252 | </row><row><entry spanname="descr">Aborts automatic focusing | |
| 3253 | started with <constant>V4L2_CID_AUTO_FOCUS_START</constant> control. It is | |
| 3254 | effective only when the continuous autofocus is disabled, that is when | |
| 3255 | <constant>V4L2_CID_FOCUS_AUTO</constant> control is set to <constant>FALSE | |
| 3256 | </constant> (0).</entry> | |
| 3257 | </row> | |
| 3258 | <row><entry></entry></row> | |
| 3259 | ||
| 3260 | <row id="v4l2-auto-focus-status"> | |
| 3261 | <entry spanname="id"> | |
| 3262 | <constant>V4L2_CID_AUTO_FOCUS_STATUS</constant> </entry> | |
| 3263 | <entry>bitmask</entry> | |
| 3264 | </row> | |
| 3265 | <row><entry spanname="descr">The automatic focus status. This is a read-only | |
| 3266 | control.</entry> | |
| 3267 | </row> | |
| 3268 | <row> | |
| 3269 | <entrytbl spanname="descr" cols="2"> | |
| 3270 | <tbody valign="top"> | |
| 3271 | <row> | |
| 3272 | <entry><constant>V4L2_AUTO_FOCUS_STATUS_IDLE</constant> </entry> | |
| 3273 | <entry>Automatic focus is not active.</entry> | |
| 3274 | </row> | |
| 3275 | <row> | |
| 3276 | <entry><constant>V4L2_AUTO_FOCUS_STATUS_BUSY</constant> </entry> | |
| 3277 | <entry>Automatic focusing is in progress.</entry> | |
| 3278 | </row> | |
| 3279 | <row> | |
| 3280 | <entry><constant>V4L2_AUTO_FOCUS_STATUS_REACHED</constant> </entry> | |
| 3281 | <entry>Focus has been reached.</entry> | |
| 3282 | </row> | |
| 3283 | <row> | |
| 3284 | <entry><constant>V4L2_AUTO_FOCUS_STATUS_FAILED</constant> </entry> | |
| 3285 | <entry>Automatic focus has failed, the driver will not | |
| 3286 | transition from this state until another action is | |
| 3287 | performed by an application.</entry> | |
| 3288 | </row> | |
| 3289 | </tbody> | |
| 3290 | </entrytbl> | |
| 3291 | </row> | |
| 3292 | <row><entry spanname="descr"> | |
| 3293 | Setting <constant>V4L2_LOCK_FOCUS</constant> lock bit of the <constant>V4L2_CID_3A_LOCK | |
| 3294 | </constant> control may stop updates of the <constant>V4L2_CID_AUTO_FOCUS_STATUS</constant> | |
| 3295 | control value.</entry> | |
| 3296 | </row> | |
| 3297 | <row><entry></entry></row> | |
| 3298 | ||
| 3299 | <row id="v4l2-auto-focus-range"> | |
| 3300 | <entry spanname="id"> | |
| 3301 | <constant>V4L2_CID_AUTO_FOCUS_RANGE</constant> </entry> | |
| 3302 | <entry>enum v4l2_auto_focus_range</entry> | |
| 3303 | </row> | |
| 3304 | <row><entry spanname="descr">Determines auto focus distance range | |
| 3305 | for which lens may be adjusted. </entry> | |
| 3306 | </row> | |
| 3307 | <row> | |
| 3308 | <entrytbl spanname="descr" cols="2"> | |
| 3309 | <tbody valign="top"> | |
| 3310 | <row> | |
| 3311 | <entry><constant>V4L2_AUTO_FOCUS_RANGE_AUTO</constant> </entry> | |
| 3312 | <entry>The camera automatically selects the focus range.</entry> | |
| 3313 | </row> | |
| 3314 | <row> | |
| 3315 | <entry><constant>V4L2_AUTO_FOCUS_RANGE_NORMAL</constant> </entry> | |
| 3316 | <entry>Normal distance range, limited for best automatic focus | |
| 3317 | performance.</entry> | |
| 3318 | </row> | |
| 3319 | <row> | |
| 3320 | <entry><constant>V4L2_AUTO_FOCUS_RANGE_MACRO</constant> </entry> | |
| 3321 | <entry>Macro (close-up) auto focus. The camera will | |
| 3322 | use its minimum possible distance for auto focus.</entry> | |
| 3323 | </row> | |
| 3324 | <row> | |
| 3325 | <entry><constant>V4L2_AUTO_FOCUS_RANGE_INFINITY</constant> </entry> | |
| 3326 | <entry>The lens is set to focus on an object at infinite distance.</entry> | |
| 3327 | </row> | |
| 3328 | </tbody> | |
| 3329 | </entrytbl> | |
| 3330 | </row> | |
| 3331 | <row><entry></entry></row> | |
| 3332 | ||
| 8e080c2e MCC |
3333 | <row> |
| 3334 | <entry spanname="id"><constant>V4L2_CID_ZOOM_ABSOLUTE</constant> </entry> | |
| 3335 | <entry>integer</entry> | |
| 3336 | </row><row><entry spanname="descr">Specify the objective lens | |
| 3337 | focal length as an absolute value. The zoom unit is driver-specific and its | |
| 3338 | value should be a positive integer.</entry> | |
| 3339 | </row> | |
| 3340 | <row><entry></entry></row> | |
| 3341 | ||
| 3342 | <row> | |
| 3343 | <entry spanname="id"><constant>V4L2_CID_ZOOM_RELATIVE</constant> </entry> | |
| 3344 | <entry>integer</entry> | |
| 3345 | </row><row><entry spanname="descr">Specify the objective lens | |
| 3346 | focal length relatively to the current value. Positive values move the zoom | |
| 3347 | lens group towards the telephoto direction, negative values towards the | |
| 3348 | wide-angle direction. The zoom unit is driver-specific. This is a write-only control.</entry> | |
| 3349 | </row> | |
| 3350 | <row><entry></entry></row> | |
| 3351 | ||
| 3352 | <row> | |
| 3353 | <entry spanname="id"><constant>V4L2_CID_ZOOM_CONTINUOUS</constant> </entry> | |
| 3354 | <entry>integer</entry> | |
| 3355 | </row><row><entry spanname="descr">Move the objective lens group | |
| 3356 | at the specified speed until it reaches physical device limits or until an | |
| 3357 | explicit request to stop the movement. A positive value moves the zoom lens | |
| 3358 | group towards the telephoto direction. A value of zero stops the zoom lens | |
| 3359 | group movement. A negative value moves the zoom lens group towards the | |
| 3360 | wide-angle direction. The zoom speed unit is driver-specific.</entry> | |
| 3361 | </row> | |
| 3362 | <row><entry></entry></row> | |
| 3363 | ||
| 48213fe3 LP |
3364 | <row> |
| 3365 | <entry spanname="id"><constant>V4L2_CID_IRIS_ABSOLUTE</constant> </entry> | |
| 3366 | <entry>integer</entry> | |
| 3367 | </row><row><entry spanname="descr">This control sets the | |
| 3368 | camera's aperture to the specified value. The unit is undefined. | |
| 3369 | Larger values open the iris wider, smaller values close it.</entry> | |
| 3370 | </row> | |
| 3371 | <row><entry></entry></row> | |
| 3372 | ||
| 3373 | <row> | |
| 3374 | <entry spanname="id"><constant>V4L2_CID_IRIS_RELATIVE</constant> </entry> | |
| 3375 | <entry>integer</entry> | |
| 3376 | </row><row><entry spanname="descr">This control modifies the | |
| 3377 | camera's aperture by the specified amount. The unit is undefined. | |
| 3378 | Positive values open the iris one step further, negative values close | |
| 3379 | it one step further. This is a write-only control.</entry> | |
| 3380 | </row> | |
| 3381 | <row><entry></entry></row> | |
| 3382 | ||
| 8e080c2e MCC |
3383 | <row> |
| 3384 | <entry spanname="id"><constant>V4L2_CID_PRIVACY</constant> </entry> | |
| 3385 | <entry>boolean</entry> | |
| 3386 | </row><row><entry spanname="descr">Prevent video from being acquired | |
| 3387 | by the camera. When this control is set to <constant>TRUE</constant> (1), no | |
| 3388 | image can be captured by the camera. Common means to enforce privacy are | |
| 3389 | mechanical obturation of the sensor and firmware image processing, but the | |
| 3390 | device is not restricted to these methods. Devices that implement the privacy | |
| 3391 | control must support read access and may support write access.</entry> | |
| 3392 | </row> | |
| 3393 | ||
| 3394 | <row> | |
| 3395 | <entry spanname="id"><constant>V4L2_CID_BAND_STOP_FILTER</constant> </entry> | |
| 3396 | <entry>integer</entry> | |
| 3397 | </row><row><entry spanname="descr">Switch the band-stop filter of a | |
| 3398 | camera sensor on or off, or specify its strength. Such band-stop filters can | |
| 3399 | be used, for example, to filter out the fluorescent light component.</entry> | |
| 3400 | </row> | |
| 3401 | <row><entry></entry></row> | |
| e40a0573 SN |
3402 | |
| 3403 | <row id="v4l2-auto-n-preset-white-balance"> | |
| 3404 | <entry spanname="id"><constant>V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE</constant> </entry> | |
| 3405 | <entry>enum v4l2_auto_n_preset_white_balance</entry> | |
| 3406 | </row><row><entry spanname="descr">Sets white balance to automatic, | |
| 3407 | manual or a preset. The presets determine color temperature of the light as | |
| 3408 | a hint to the camera for white balance adjustments resulting in most accurate | |
| 3409 | color representation. The following white balance presets are listed in order | |
| 3410 | of increasing color temperature.</entry> | |
| 3411 | </row> | |
| 3412 | <row> | |
| 3413 | <entrytbl spanname="descr" cols="2"> | |
| 3414 | <tbody valign="top"> | |
| 3415 | <row> | |
| 3416 | <entry><constant>V4L2_WHITE_BALANCE_MANUAL</constant> </entry> | |
| 3417 | <entry>Manual white balance.</entry> | |
| 3418 | </row> | |
| 3419 | <row> | |
| 3420 | <entry><constant>V4L2_WHITE_BALANCE_AUTO</constant> </entry> | |
| 3421 | <entry>Automatic white balance adjustments.</entry> | |
| 3422 | </row> | |
| 3423 | <row> | |
| 3424 | <entry><constant>V4L2_WHITE_BALANCE_INCANDESCENT</constant> </entry> | |
| 3425 | <entry>White balance setting for incandescent (tungsten) lighting. | |
| 3426 | It generally cools down the colors and corresponds approximately to 2500...3500 K | |
| 3427 | color temperature range.</entry> | |
| 3428 | </row> | |
| 3429 | <row> | |
| 3430 | <entry><constant>V4L2_WHITE_BALANCE_FLUORESCENT</constant> </entry> | |
| 3431 | <entry>White balance preset for fluorescent lighting. | |
| 3432 | It corresponds approximately to 4000...5000 K color temperature.</entry> | |
| 3433 | </row> | |
| 3434 | <row> | |
| 3435 | <entry><constant>V4L2_WHITE_BALANCE_FLUORESCENT_H</constant> </entry> | |
| 3436 | <entry>With this setting the camera will compensate for | |
| 3437 | fluorescent H lighting.</entry> | |
| 3438 | </row> | |
| 3439 | <row> | |
| 3440 | <entry><constant>V4L2_WHITE_BALANCE_HORIZON</constant> </entry> | |
| 3441 | <entry>White balance setting for horizon daylight. | |
| 3442 | It corresponds approximately to 5000 K color temperature.</entry> | |
| 3443 | </row> | |
| 3444 | <row> | |
| 3445 | <entry><constant>V4L2_WHITE_BALANCE_DAYLIGHT</constant> </entry> | |
| 3446 | <entry>White balance preset for daylight (with clear sky). | |
| 3447 | It corresponds approximately to 5000...6500 K color temperature.</entry> | |
| 3448 | </row> | |
| 3449 | <row> | |
| 3450 | <entry><constant>V4L2_WHITE_BALANCE_FLASH</constant> </entry> | |
| 3451 | <entry>With this setting the camera will compensate for the flash | |
| 3452 | light. It slightly warms up the colors and corresponds roughly to 5000...5500 K | |
| 3453 | color temperature.</entry> | |
| 3454 | </row> | |
| 3455 | <row> | |
| 3456 | <entry><constant>V4L2_WHITE_BALANCE_CLOUDY</constant> </entry> | |
| 3457 | <entry>White balance preset for moderately overcast sky. | |
| 3458 | This option corresponds approximately to 6500...8000 K color temperature | |
| 3459 | range.</entry> | |
| 3460 | </row> | |
| 3461 | <row> | |
| 3462 | <entry><constant>V4L2_WHITE_BALANCE_SHADE</constant> </entry> | |
| 3463 | <entry>White balance preset for shade or heavily overcast | |
| 3464 | sky. It corresponds approximately to 9000...10000 K color temperature. | |
| 3465 | </entry> | |
| 3466 | </row> | |
| 3467 | </tbody> | |
| 3468 | </entrytbl> | |
| 3469 | </row> | |
| 3470 | <row><entry></entry></row> | |
| 3471 | ||
| 44d44a1a SN |
3472 | <row id="v4l2-wide-dynamic-range"> |
| 3473 | <entry spanname="id"><constant>V4L2_CID_WIDE_DYNAMIC_RANGE</constant></entry> | |
| 3474 | <entry>boolean</entry> | |
| 3475 | </row> | |
| 3476 | <row> | |
| 3477 | <entry spanname="descr">Enables or disables the camera's wide dynamic | |
| 3478 | range feature. This feature allows to obtain clear images in situations where | |
| 3479 | intensity of the illumination varies significantly throughout the scene, i.e. | |
| 3480 | there are simultaneously very dark and very bright areas. It is most commonly | |
| 3481 | realized in cameras by combining two subsequent frames with different exposure | |
| 3482 | times. <footnote id="ctypeconv"><para> This control may be changed to a menu | |
| 3483 | control in the future, if more options are required.</para></footnote></entry> | |
| 3484 | </row> | |
| 3485 | <row><entry></entry></row> | |
| 3486 | ||
| 82b3056c SN |
3487 | <row id="v4l2-image-stabilization"> |
| 3488 | <entry spanname="id"><constant>V4L2_CID_IMAGE_STABILIZATION</constant></entry> | |
| 3489 | <entry>boolean</entry> | |
| 3490 | </row> | |
| 3491 | <row> | |
| 3492 | <entry spanname="descr">Enables or disables image stabilization. | |
| 3493 | <footnoteref linkend="ctypeconv"/></entry> | |
| 3494 | </row> | |
| 3495 | <row><entry></entry></row> | |
| 3496 | ||
| 7f84ad8b SN |
3497 | <row> |
| 3498 | <entry spanname="id"><constant>V4L2_CID_ISO_SENSITIVITY</constant> </entry> | |
| 3499 | <entry>integer menu</entry> | |
| 3500 | </row><row><entry spanname="descr">Determines ISO equivalent of an | |
| 3501 | image sensor indicating the sensor's sensitivity to light. The numbers are | |
| 3502 | expressed in arithmetic scale, as per <xref linkend="iso12232" /> standard, | |
| 3503 | where doubling the sensor sensitivity is represented by doubling the numerical | |
| 3504 | ISO value. Applications should interpret the values as standard ISO values | |
| 3505 | multiplied by 1000, e.g. control value 800 stands for ISO 0.8. Drivers will | |
| 3506 | usually support only a subset of standard ISO values. The effect of setting | |
| 3507 | this control while the <constant>V4L2_CID_ISO_SENSITIVITY_AUTO</constant> | |
| 3508 | control is set to a value other than <constant>V4L2_CID_ISO_SENSITIVITY_MANUAL | |
| 3509 | </constant> is undefined, drivers should ignore such requests.</entry> | |
| 3510 | </row> | |
| 3511 | <row><entry></entry></row> | |
| 3512 | ||
| 3513 | <row id="v4l2-iso-sensitivity-auto-type"> | |
| 3514 | <entry spanname="id"><constant>V4L2_CID_ISO_SENSITIVITY_AUTO</constant> </entry> | |
| 3515 | <entry>enum v4l2_iso_sensitivity_type</entry> | |
| 3516 | </row><row><entry spanname="descr">Enables or disables automatic ISO | |
| 3517 | sensitivity adjustments.</entry> | |
| 3518 | </row> | |
| 3519 | <row> | |
| 3520 | <entrytbl spanname="descr" cols="2"> | |
| 3521 | <tbody valign="top"> | |
| 3522 | <row> | |
| 3523 | <entry><constant>V4L2_CID_ISO_SENSITIVITY_MANUAL</constant> </entry> | |
| 3524 | <entry>Manual ISO sensitivity.</entry> | |
| 3525 | </row> | |
| 3526 | <row> | |
| 3527 | <entry><constant>V4L2_CID_ISO_SENSITIVITY_AUTO</constant> </entry> | |
| 3528 | <entry>Automatic ISO sensitivity adjustments.</entry> | |
| 3529 | </row> | |
| 3530 | </tbody> | |
| 3531 | </entrytbl> | |
| 3532 | </row> | |
| 3533 | <row><entry></entry></row> | |
| 3534 | ||
| 0bf6b7dc SN |
3535 | <row id="v4l2-scene-mode"> |
| 3536 | <entry spanname="id"><constant>V4L2_CID_SCENE_MODE</constant> </entry> | |
| 3537 | <entry>enum v4l2_scene_mode</entry> | |
| 3538 | </row><row><entry spanname="descr">This control allows to select | |
| 3539 | scene programs as the camera automatic modes optimized for common shooting | |
| 3540 | scenes. Within these modes the camera determines best exposure, aperture, | |
| 3541 | focusing, light metering, white balance and equivalent sensitivity. The | |
| 3542 | controls of those parameters are influenced by the scene mode control. | |
| 3543 | An exact behavior in each mode is subject to the camera specification. | |
| 3544 | ||
| 3545 | <para>When the scene mode feature is not used, this control should be set to | |
| 3546 | <constant>V4L2_SCENE_MODE_NONE</constant> to make sure the other possibly | |
| 3547 | related controls are accessible. The following scene programs are defined: | |
| 3548 | </para> | |
| 3549 | </entry> | |
| 3550 | </row> | |
| 3551 | <row> | |
| 3552 | <entrytbl spanname="descr" cols="2"> | |
| 3553 | <tbody valign="top"> | |
| 3554 | <row> | |
| 3555 | <entry><constant>V4L2_SCENE_MODE_NONE</constant> </entry> | |
| 3556 | <entry>The scene mode feature is disabled.</entry> | |
| 3557 | </row> | |
| 3558 | <row> | |
| 3559 | <entry><constant>V4L2_SCENE_MODE_BACKLIGHT</constant> </entry> | |
| 3560 | <entry>Backlight. Compensates for dark shadows when light is | |
| 3561 | coming from behind a subject, also by automatically turning | |
| 3562 | on the flash.</entry> | |
| 3563 | </row> | |
| 3564 | <row> | |
| 3565 | <entry><constant>V4L2_SCENE_MODE_BEACH_SNOW</constant> </entry> | |
| 3566 | <entry>Beach and snow. This mode compensates for all-white or | |
| 3567 | bright scenes, which tend to look gray and low contrast, when camera's automatic | |
| 3568 | exposure is based on an average scene brightness. To compensate, this mode | |
| 3569 | automatically slightly overexposes the frames. The white balance may also be | |
| 3570 | adjusted to compensate for the fact that reflected snow looks bluish rather | |
| 3571 | than white.</entry> | |
| 3572 | </row> | |
| 3573 | <row> | |
| 3574 | <entry><constant>V4L2_SCENE_MODE_CANDLELIGHT</constant> </entry> | |
| 3575 | <entry>Candle light. The camera generally raises the ISO | |
| 3576 | sensitivity and lowers the shutter speed. This mode compensates for relatively | |
| 3577 | close subject in the scene. The flash is disabled in order to preserve the | |
| 3578 | ambiance of the light.</entry> | |
| 3579 | </row> | |
| 3580 | <row> | |
| 3581 | <entry><constant>V4L2_SCENE_MODE_DAWN_DUSK</constant> </entry> | |
| 3582 | <entry>Dawn and dusk. Preserves the colors seen in low | |
| 3583 | natural light before dusk and after down. The camera may turn off the flash, | |
| 3584 | and automatically focus at infinity. It will usually boost saturation and | |
| 3585 | lower the shutter speed.</entry> | |
| 3586 | </row> | |
| 3587 | <row> | |
| 3588 | <entry><constant>V4L2_SCENE_MODE_FALL_COLORS</constant> </entry> | |
| 3589 | <entry>Fall colors. Increases saturation and adjusts white | |
| 3590 | balance for color enhancement. Pictures of autumn leaves get saturated reds | |
| 3591 | and yellows.</entry> | |
| 3592 | </row> | |
| 3593 | <row> | |
| 3594 | <entry><constant>V4L2_SCENE_MODE_FIREWORKS</constant> </entry> | |
| 3595 | <entry>Fireworks. Long exposure times are used to capture | |
| 3596 | the expanding burst of light from a firework. The camera may invoke image | |
| 3597 | stabilization.</entry> | |
| 3598 | </row> | |
| 3599 | <row> | |
| 3600 | <entry><constant>V4L2_SCENE_MODE_LANDSCAPE</constant> </entry> | |
| 3601 | <entry>Landscape. The camera may choose a small aperture to | |
| 3602 | provide deep depth of field and long exposure duration to help capture detail | |
| 3603 | in dim light conditions. The focus is fixed at infinity. Suitable for distant | |
| 3604 | and wide scenery.</entry> | |
| 3605 | </row> | |
| 3606 | <row> | |
| 3607 | <entry><constant>V4L2_SCENE_MODE_NIGHT</constant> </entry> | |
| 3608 | <entry>Night, also known as Night Landscape. Designed for low | |
| 3609 | light conditions, it preserves detail in the dark areas without blowing out bright | |
| 3610 | objects. The camera generally sets itself to a medium-to-high ISO sensitivity, | |
| 3611 | with a relatively long exposure time, and turns flash off. As such, there will be | |
| 3612 | increased image noise and the possibility of blurred image.</entry> | |
| 3613 | </row> | |
| 3614 | <row> | |
| 3615 | <entry><constant>V4L2_SCENE_MODE_PARTY_INDOOR</constant> </entry> | |
| 3616 | <entry>Party and indoor. Designed to capture indoor scenes | |
| 3617 | that are lit by indoor background lighting as well as the flash. The camera | |
| 3618 | usually increases ISO sensitivity, and adjusts exposure for the low light | |
| 3619 | conditions.</entry> | |
| 3620 | </row> | |
| 3621 | <row> | |
| 3622 | <entry><constant>V4L2_SCENE_MODE_PORTRAIT</constant> </entry> | |
| 3623 | <entry>Portrait. The camera adjusts the aperture so that the | |
| 3624 | depth of field is reduced, which helps to isolate the subject against a smooth | |
| 3625 | background. Most cameras recognize the presence of faces in the scene and focus | |
| 3626 | on them. The color hue is adjusted to enhance skin tones. The intensity of the | |
| 3627 | flash is often reduced.</entry> | |
| 3628 | </row> | |
| 3629 | <row> | |
| 3630 | <entry><constant>V4L2_SCENE_MODE_SPORTS</constant> </entry> | |
| 3631 | <entry>Sports. Significantly increases ISO and uses a fast | |
| 3632 | shutter speed to freeze motion of rapidly-moving subjects. Increased image | |
| 3633 | noise may be seen in this mode.</entry> | |
| 3634 | </row> | |
| 3635 | <row> | |
| 3636 | <entry><constant>V4L2_SCENE_MODE_SUNSET</constant> </entry> | |
| 3637 | <entry>Sunset. Preserves deep hues seen in sunsets and | |
| 3638 | sunrises. It bumps up the saturation.</entry> | |
| 3639 | </row> | |
| 3640 | <row> | |
| 3641 | <entry><constant>V4L2_SCENE_MODE_TEXT</constant> </entry> | |
| 3642 | <entry>Text. It applies extra contrast and sharpness, it is | |
| 3643 | typically a black-and-white mode optimized for readability. Automatic focus | |
| 3644 | may be switched to close-up mode and this setting may also involve some | |
| 3645 | lens-distortion correction.</entry> | |
| 3646 | </row> | |
| 3647 | </tbody> | |
| 3648 | </entrytbl> | |
| 3649 | </row> | |
| 3650 | <row><entry></entry></row> | |
| 3651 | ||
| fc162a09 SN |
3652 | <row> |
| 3653 | <entry spanname="id"><constant>V4L2_CID_3A_LOCK</constant></entry> | |
| 3654 | <entry>bitmask</entry> | |
| 3655 | </row> | |
| 3656 | <row> | |
| 3657 | <entry spanname="descr">This control locks or unlocks the automatic | |
| 3658 | focus, exposure and white balance. The automatic adjustments can be paused | |
| 3659 | independently by setting the corresponding lock bit to 1. The camera then retains | |
| 3660 | the settings until the lock bit is cleared. The following lock bits are defined: | |
| 3661 | </entry> | |
| 3662 | </row> | |
| 3663 | <row> | |
| 3664 | <entrytbl spanname="descr" cols="2"> | |
| 3665 | <tbody valign="top"> | |
| 3666 | <row> | |
| 3667 | <entry><constant>V4L2_LOCK_EXPOSURE</constant></entry> | |
| 3668 | <entry>Automatic exposure adjustments lock.</entry> | |
| 3669 | </row> | |
| 3670 | <row> | |
| 3671 | <entry><constant>V4L2_LOCK_WHITE_BALANCE</constant></entry> | |
| 3672 | <entry>Automatic white balance adjustments lock.</entry> | |
| 3673 | </row> | |
| 3674 | <row> | |
| 3675 | <entry><constant>V4L2_LOCK_FOCUS</constant></entry> | |
| 3676 | <entry>Automatic focus lock.</entry> | |
| 3677 | </row> | |
| 3678 | </tbody> | |
| 3679 | </entrytbl> | |
| 3680 | </row> | |
| 3681 | <row><entry spanname="descr"> | |
| 3682 | When a given algorithm is not enabled, drivers should ignore requests | |
| 3683 | to lock it and should return no error. An example might be an application | |
| 3684 | setting bit <constant>V4L2_LOCK_WHITE_BALANCE</constant> when the | |
| 3685 | <constant>V4L2_CID_AUTO_WHITE_BALANCE</constant> control is set to | |
| 3686 | <constant>FALSE</constant>. The value of this control may be changed | |
| 3687 | by exposure, white balance or focus controls.</entry> | |
| 3688 | </row> | |
| 3689 | <row><entry></entry></row> | |
| 3690 | ||
| 8e080c2e MCC |
3691 | </tbody> |
| 3692 | </tgroup> | |
| 3693 | </table> | |
| 3694 | </section> | |
| 3695 | ||
| 3696 | <section id="fm-tx-controls"> | |
| 3697 | <title>FM Transmitter Control Reference</title> | |
| 3698 | ||
| 3699 | <para>The FM Transmitter (FM_TX) class includes controls for common features of | |
| 3700 | FM transmissions capable devices. Currently this class includes parameters for audio | |
| 3701 | compression, pilot tone generation, audio deviation limiter, RDS transmission and | |
| 3702 | tuning power features.</para> | |
| 3703 | ||
| 3704 | <table pgwide="1" frame="none" id="fm-tx-control-id"> | |
| 3705 | <title>FM_TX Control IDs</title> | |
| 3706 | ||
| 3707 | <tgroup cols="4"> | |
| 3708 | <colspec colname="c1" colwidth="1*" /> | |
| 3709 | <colspec colname="c2" colwidth="6*" /> | |
| 3710 | <colspec colname="c3" colwidth="2*" /> | |
| 3711 | <colspec colname="c4" colwidth="6*" /> | |
| 3712 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 3713 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 3714 | <thead> | |
| 3715 | <row> | |
| 3716 | <entry spanname="id" align="left">ID</entry> | |
| 3717 | <entry align="left">Type</entry> | |
| 3718 | </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> | |
| 3719 | </row> | |
| 3720 | </thead> | |
| 3721 | <tbody valign="top"> | |
| 3722 | <row><entry></entry></row> | |
| 3723 | <row> | |
| 3724 | <entry spanname="id"><constant>V4L2_CID_FM_TX_CLASS</constant> </entry> | |
| 3725 | <entry>class</entry> | |
| 3726 | </row><row><entry spanname="descr">The FM_TX class | |
| 3727 | descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a | |
| 3728 | description of this control class.</entry> | |
| 3729 | </row> | |
| 3730 | <row> | |
| 3731 | <entry spanname="id"><constant>V4L2_CID_RDS_TX_DEVIATION</constant> </entry> | |
| 3732 | <entry>integer</entry> | |
| 3733 | </row> | |
| 3734 | <row><entry spanname="descr">Configures RDS signal frequency deviation level in Hz. | |
| 3735 | The range and step are driver-specific.</entry> | |
| 3736 | </row> | |
| 3737 | <row> | |
| 3738 | <entry spanname="id"><constant>V4L2_CID_RDS_TX_PI</constant> </entry> | |
| 3739 | <entry>integer</entry> | |
| 3740 | </row> | |
| 3741 | <row><entry spanname="descr">Sets the RDS Programme Identification field | |
| 3742 | for transmission.</entry> | |
| 3743 | </row> | |
| 3744 | <row> | |
| 3745 | <entry spanname="id"><constant>V4L2_CID_RDS_TX_PTY</constant> </entry> | |
| 3746 | <entry>integer</entry> | |
| 3747 | </row> | |
| 3748 | <row><entry spanname="descr">Sets the RDS Programme Type field for transmission. | |
| 3749 | This encodes up to 31 pre-defined programme types.</entry> | |
| 3750 | </row> | |
| 3751 | <row> | |
| 3752 | <entry spanname="id"><constant>V4L2_CID_RDS_TX_PS_NAME</constant> </entry> | |
| 3753 | <entry>string</entry> | |
| 3754 | </row> | |
| 3755 | <row><entry spanname="descr">Sets the Programme Service name (PS_NAME) for transmission. | |
| 3756 | It is intended for static display on a receiver. It is the primary aid to listeners in programme service | |
| 34affc6a | 3757 | identification and selection. In Annex E of <xref linkend="iec62106" />, the RDS specification, |
| 8e080c2e MCC |
3758 | there is a full description of the correct character encoding for Programme Service name strings. |
| 3759 | Also from RDS specification, PS is usually a single eight character text. However, it is also possible | |
| 3760 | to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured | |
| 3761 | with steps of 8 characters. The result is it must always contain a string with size multiple of 8.</entry> | |
| 3762 | </row> | |
| 3763 | <row> | |
| 3764 | <entry spanname="id"><constant>V4L2_CID_RDS_TX_RADIO_TEXT</constant> </entry> | |
| 3765 | <entry>string</entry> | |
| 3766 | </row> | |
| 3767 | <row><entry spanname="descr">Sets the Radio Text info for transmission. It is a textual description of | |
| 3768 | what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names, | |
| 3769 | programme-related information or any other text. In these cases, RadioText should be used in addition to | |
| 3770 | <constant>V4L2_CID_RDS_TX_PS_NAME</constant>. The encoding for Radio Text strings is also fully described | |
| 34affc6a | 3771 | in Annex E of <xref linkend="iec62106" />. The length of Radio Text strings depends on which RDS Block is being |
| 8e080c2e MCC |
3772 | used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible |
| 3773 | to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured | |
| 3774 | with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64. </entry> | |
| 3775 | </row> | |
| 3776 | <row> | |
| 3777 | <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_ENABLED</constant> </entry> | |
| 3778 | <entry>boolean</entry> | |
| 3779 | </row> | |
| 3780 | <row><entry spanname="descr">Enables or disables the audio deviation limiter feature. | |
| 3781 | The limiter is useful when trying to maximize the audio volume, minimize receiver-generated | |
| 3782 | distortion and prevent overmodulation. | |
| 3783 | </entry> | |
| 3784 | </row> | |
| 3785 | <row> | |
| 3786 | <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_RELEASE_TIME</constant> </entry> | |
| 3787 | <entry>integer</entry> | |
| 3788 | </row> | |
| 3789 | <row><entry spanname="descr">Sets the audio deviation limiter feature release time. | |
| 3790 | Unit is in useconds. Step and range are driver-specific.</entry> | |
| 3791 | </row> | |
| 3792 | <row> | |
| 3793 | <entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_DEVIATION</constant> </entry> | |
| 3794 | <entry>integer</entry> | |
| 3795 | </row> | |
| 3796 | <row><entry spanname="descr">Configures audio frequency deviation level in Hz. | |
| 3797 | The range and step are driver-specific.</entry> | |
| 3798 | </row> | |
| 3799 | <row> | |
| 3800 | <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_ENABLED</constant> </entry> | |
| 3801 | <entry>boolean</entry> | |
| 3802 | </row> | |
| 3803 | <row><entry spanname="descr">Enables or disables the audio compression feature. | |
| 3804 | This feature amplifies signals below the threshold by a fixed gain and compresses audio | |
| 3805 | signals above the threshold by the ratio of Threshold/(Gain + Threshold).</entry> | |
| 3806 | </row> | |
| 3807 | <row> | |
| 3808 | <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_GAIN</constant> </entry> | |
| 3809 | <entry>integer</entry> | |
| 3810 | </row> | |
| 3811 | <row><entry spanname="descr">Sets the gain for audio compression feature. It is | |
| 3812 | a dB value. The range and step are driver-specific.</entry> | |
| 3813 | </row> | |
| 3814 | <row> | |
| 3815 | <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_THRESHOLD</constant> </entry> | |
| 3816 | <entry>integer</entry> | |
| 3817 | </row> | |
| 3818 | <row><entry spanname="descr">Sets the threshold level for audio compression freature. | |
| 3819 | It is a dB value. The range and step are driver-specific.</entry> | |
| 3820 | </row> | |
| 3821 | <row> | |
| 3822 | <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME</constant> </entry> | |
| 3823 | <entry>integer</entry> | |
| 3824 | </row> | |
| 3825 | <row><entry spanname="descr">Sets the attack time for audio compression feature. | |
| 3826 | It is a useconds value. The range and step are driver-specific.</entry> | |
| 3827 | </row> | |
| 3828 | <row> | |
| 3829 | <entry spanname="id"><constant>V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME</constant> </entry> | |
| 3830 | <entry>integer</entry> | |
| 3831 | </row> | |
| 3832 | <row><entry spanname="descr">Sets the release time for audio compression feature. | |
| 3833 | It is a useconds value. The range and step are driver-specific.</entry> | |
| 3834 | </row> | |
| 3835 | <row> | |
| 3836 | <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_ENABLED</constant> </entry> | |
| 3837 | <entry>boolean</entry> | |
| 3838 | </row> | |
| 3839 | <row><entry spanname="descr">Enables or disables the pilot tone generation feature.</entry> | |
| 3840 | </row> | |
| 3841 | <row> | |
| 3842 | <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_DEVIATION</constant> </entry> | |
| 3843 | <entry>integer</entry> | |
| 3844 | </row> | |
| 3845 | <row><entry spanname="descr">Configures pilot tone frequency deviation level. Unit is | |
| 3846 | in Hz. The range and step are driver-specific.</entry> | |
| 3847 | </row> | |
| 3848 | <row> | |
| 3849 | <entry spanname="id"><constant>V4L2_CID_PILOT_TONE_FREQUENCY</constant> </entry> | |
| 3850 | <entry>integer</entry> | |
| 3851 | </row> | |
| 3852 | <row><entry spanname="descr">Configures pilot tone frequency value. Unit is | |
| 3853 | in Hz. The range and step are driver-specific.</entry> | |
| 3854 | </row> | |
| 3855 | <row> | |
| 3856 | <entry spanname="id"><constant>V4L2_CID_TUNE_PREEMPHASIS</constant> </entry> | |
| af720c7c | 3857 | <entry>enum v4l2_preemphasis</entry> |
| 8e080c2e MCC |
3858 | </row> |
| 3859 | <row id="v4l2-preemphasis"><entry spanname="descr">Configures the pre-emphasis value for broadcasting. | |
| 3860 | A pre-emphasis filter is applied to the broadcast to accentuate the high audio frequencies. | |
| 3861 | Depending on the region, a time constant of either 50 or 75 useconds is used. The enum v4l2_preemphasis | |
| 3862 | defines possible values for pre-emphasis. Here they are:</entry> | |
| 3863 | </row><row> | |
| 3864 | <entrytbl spanname="descr" cols="2"> | |
| 3865 | <tbody valign="top"> | |
| 3866 | <row> | |
| 3867 | <entry><constant>V4L2_PREEMPHASIS_DISABLED</constant> </entry> | |
| 3868 | <entry>No pre-emphasis is applied.</entry> | |
| 3869 | </row> | |
| 3870 | <row> | |
| 3871 | <entry><constant>V4L2_PREEMPHASIS_50_uS</constant> </entry> | |
| 3872 | <entry>A pre-emphasis of 50 uS is used.</entry> | |
| 3873 | </row> | |
| 3874 | <row> | |
| 3875 | <entry><constant>V4L2_PREEMPHASIS_75_uS</constant> </entry> | |
| 3876 | <entry>A pre-emphasis of 75 uS is used.</entry> | |
| 3877 | </row> | |
| 3878 | </tbody> | |
| 3879 | </entrytbl> | |
| 3880 | ||
| 3881 | </row> | |
| 3882 | <row> | |
| 3883 | <entry spanname="id"><constant>V4L2_CID_TUNE_POWER_LEVEL</constant> </entry> | |
| 3884 | <entry>integer</entry> | |
| 3885 | </row> | |
| 3886 | <row><entry spanname="descr">Sets the output power level for signal transmission. | |
| 3887 | Unit is in dBuV. Range and step are driver-specific.</entry> | |
| 3888 | </row> | |
| 3889 | <row> | |
| 3890 | <entry spanname="id"><constant>V4L2_CID_TUNE_ANTENNA_CAPACITOR</constant> </entry> | |
| 3891 | <entry>integer</entry> | |
| 3892 | </row> | |
| 3893 | <row><entry spanname="descr">This selects the value of antenna tuning capacitor | |
| 3894 | manually or automatically if set to zero. Unit, range and step are driver-specific.</entry> | |
| 3895 | </row> | |
| 3896 | <row><entry></entry></row> | |
| 3897 | </tbody> | |
| 3898 | </tgroup> | |
| 3899 | </table> | |
| 3900 | ||
| 3901 | <para>For more details about RDS specification, refer to | |
| 34affc6a | 3902 | <xref linkend="iec62106" /> document, from CENELEC.</para> |
| 8e080c2e | 3903 | </section> |
| 7ba85fa4 SA |
3904 | |
| 3905 | <section id="flash-controls"> | |
| 3906 | <title>Flash Control Reference</title> | |
| 3907 | ||
| 3908 | <note> | |
| 3909 | <title>Experimental</title> | |
| 3910 | ||
| 3911 | <para>This is an <link linkend="experimental">experimental</link> | |
| 3912 | interface and may change in the future.</para> | |
| 3913 | </note> | |
| 3914 | ||
| 3915 | <para> | |
| 3916 | The V4L2 flash controls are intended to provide generic access | |
| 3917 | to flash controller devices. Flash controller devices are | |
| 3918 | typically used in digital cameras. | |
| 3919 | </para> | |
| 3920 | ||
| 3921 | <para> | |
| 3922 | The interface can support both LED and xenon flash devices. As | |
| 3923 | of writing this, there is no xenon flash driver using this | |
| 3924 | interface. | |
| 3925 | </para> | |
| 3926 | ||
| 3927 | <section id="flash-controls-use-cases"> | |
| 3928 | <title>Supported use cases</title> | |
| 3929 | ||
| 3930 | <section> | |
| 3931 | <title>Unsynchronised LED flash (software strobe)</title> | |
| 3932 | ||
| 3933 | <para> | |
| 3934 | Unsynchronised LED flash is controlled directly by the | |
| 3935 | host as the sensor. The flash must be enabled by the host | |
| 3936 | before the exposure of the image starts and disabled once | |
| 3937 | it ends. The host is fully responsible for the timing of | |
| 3938 | the flash. | |
| 3939 | </para> | |
| 3940 | ||
| 3941 | <para>Example of such device: Nokia N900.</para> | |
| 3942 | </section> | |
| 3943 | ||
| 3944 | <section> | |
| 3945 | <title>Synchronised LED flash (hardware strobe)</title> | |
| 3946 | ||
| 3947 | <para> | |
| 3948 | The synchronised LED flash is pre-programmed by the host | |
| 3949 | (power and timeout) but controlled by the sensor through a | |
| 3950 | strobe signal from the sensor to the flash. | |
| 3951 | </para> | |
| 3952 | ||
| 3953 | <para> | |
| 3954 | The sensor controls the flash duration and timing. This | |
| 3955 | information typically must be made available to the | |
| 3956 | sensor. | |
| 3957 | </para> | |
| 3958 | ||
| 3959 | </section> | |
| 3960 | ||
| 3961 | <section> | |
| 3962 | <title>LED flash as torch</title> | |
| 3963 | ||
| 3964 | <para> | |
| 3965 | LED flash may be used as torch in conjunction with another | |
| 3966 | use case involving camera or individually. | |
| 3967 | </para> | |
| 3968 | ||
| 7ba85fa4 | 3969 | |
| 071408b6 HV |
3970 | <table pgwide="1" frame="none" id="flash-control-id"> |
| 3971 | <title>Flash Control IDs</title> | |
| 3972 | ||
| 3973 | <tgroup cols="4"> | |
| 3974 | <colspec colname="c1" colwidth="1*" /> | |
| 3975 | <colspec colname="c2" colwidth="6*" /> | |
| 3976 | <colspec colname="c3" colwidth="2*" /> | |
| 3977 | <colspec colname="c4" colwidth="6*" /> | |
| 3978 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 3979 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 3980 | <thead> | |
| 3981 | <row> | |
| 3982 | <entry spanname="id" align="left">ID</entry> | |
| 3983 | <entry align="left">Type</entry> | |
| 3984 | </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> | |
| 3985 | </row> | |
| 3986 | </thead> | |
| 3987 | <tbody valign="top"> | |
| 3988 | <row><entry></entry></row> | |
| 3989 | <row> | |
| 3990 | <entry spanname="id"><constant>V4L2_CID_FLASH_CLASS</constant></entry> | |
| 3991 | <entry>class</entry> | |
| 3992 | </row> | |
| 3993 | <row> | |
| 3994 | <entry spanname="descr">The FLASH class descriptor.</entry> | |
| 3995 | </row> | |
| 3996 | <row> | |
| 3997 | <entry spanname="id"><constant>V4L2_CID_FLASH_LED_MODE</constant></entry> | |
| 3998 | <entry>menu</entry> | |
| 3999 | </row> | |
| 4000 | <row id="v4l2-flash-led-mode"> | |
| 4001 | <entry spanname="descr">Defines the mode of the flash LED, | |
| 4002 | the high-power white LED attached to the flash controller. | |
| 4003 | Setting this control may not be possible in presence of | |
| 4004 | some faults. See V4L2_CID_FLASH_FAULT.</entry> | |
| 4005 | </row> | |
| 4006 | <row> | |
| 4007 | <entrytbl spanname="descr" cols="2"> | |
| 4008 | <tbody valign="top"> | |
| 4009 | <row> | |
| 4010 | <entry><constant>V4L2_FLASH_LED_MODE_NONE</constant></entry> | |
| 4011 | <entry>Off.</entry> | |
| 4012 | </row> | |
| 4013 | <row> | |
| 4014 | <entry><constant>V4L2_FLASH_LED_MODE_FLASH</constant></entry> | |
| 4015 | <entry>Flash mode.</entry> | |
| 4016 | </row> | |
| 4017 | <row> | |
| 4018 | <entry><constant>V4L2_FLASH_LED_MODE_TORCH</constant></entry> | |
| 4019 | <entry>Torch mode. See V4L2_CID_FLASH_TORCH_INTENSITY.</entry> | |
| 4020 | </row> | |
| 4021 | </tbody> | |
| 4022 | </entrytbl> | |
| 4023 | </row> | |
| 4024 | <row> | |
| 4025 | <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_SOURCE</constant></entry> | |
| 4026 | <entry>menu</entry> | |
| 4027 | </row> | |
| 4028 | <row id="v4l2-flash-strobe-source"><entry | |
| 4029 | spanname="descr">Defines the source of the flash LED | |
| 4030 | strobe.</entry> | |
| 4031 | </row> | |
| 4032 | <row> | |
| 4033 | <entrytbl spanname="descr" cols="2"> | |
| 4034 | <tbody valign="top"> | |
| 4035 | <row> | |
| 4036 | <entry><constant>V4L2_FLASH_STROBE_SOURCE_SOFTWARE</constant></entry> | |
| 4037 | <entry>The flash strobe is triggered by using | |
| 4038 | the V4L2_CID_FLASH_STROBE control.</entry> | |
| 4039 | </row> | |
| 4040 | <row> | |
| 4041 | <entry><constant>V4L2_FLASH_STROBE_SOURCE_EXTERNAL</constant></entry> | |
| 4042 | <entry>The flash strobe is triggered by an | |
| 4043 | external source. Typically this is a sensor, | |
| 4044 | which makes it possible to synchronises the | |
| 4045 | flash strobe start to exposure start.</entry> | |
| 4046 | </row> | |
| 4047 | </tbody> | |
| 4048 | </entrytbl> | |
| 4049 | </row> | |
| 4050 | <row> | |
| 4051 | <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE</constant></entry> | |
| 4052 | <entry>button</entry> | |
| 4053 | </row> | |
| 4054 | <row> | |
| 4055 | <entry spanname="descr">Strobe flash. Valid when | |
| 4056 | V4L2_CID_FLASH_LED_MODE is set to | |
| 4057 | V4L2_FLASH_LED_MODE_FLASH and V4L2_CID_FLASH_STROBE_SOURCE | |
| 4058 | is set to V4L2_FLASH_STROBE_SOURCE_SOFTWARE. Setting this | |
| 4059 | control may not be possible in presence of some faults. | |
| 4060 | See V4L2_CID_FLASH_FAULT.</entry> | |
| 4061 | </row> | |
| 4062 | <row> | |
| 4063 | <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STOP</constant></entry> | |
| 4064 | <entry>button</entry> | |
| 4065 | </row> | |
| 4066 | <row><entry spanname="descr">Stop flash strobe immediately.</entry> | |
| 4067 | </row> | |
| 4068 | <row> | |
| 4069 | <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STATUS</constant></entry> | |
| 4070 | <entry>boolean</entry> | |
| 4071 | </row> | |
| 4072 | <row> | |
| 4073 | <entry spanname="descr">Strobe status: whether the flash | |
| 4074 | is strobing at the moment or not. This is a read-only | |
| 4075 | control.</entry> | |
| 4076 | </row> | |
| 4077 | <row> | |
| 4078 | <entry spanname="id"><constant>V4L2_CID_FLASH_TIMEOUT</constant></entry> | |
| 4079 | <entry>integer</entry> | |
| 4080 | </row> | |
| 4081 | <row> | |
| 4082 | <entry spanname="descr">Hardware timeout for flash. The | |
| 4083 | flash strobe is stopped after this period of time has | |
| 4084 | passed from the start of the strobe.</entry> | |
| 4085 | </row> | |
| 4086 | <row> | |
| 4087 | <entry spanname="id"><constant>V4L2_CID_FLASH_INTENSITY</constant></entry> | |
| 4088 | <entry>integer</entry> | |
| 4089 | </row> | |
| 4090 | <row> | |
| 4091 | <entry spanname="descr">Intensity of the flash strobe when | |
| 4092 | the flash LED is in flash mode | |
| 4093 | (V4L2_FLASH_LED_MODE_FLASH). The unit should be milliamps | |
| 4094 | (mA) if possible.</entry> | |
| 4095 | </row> | |
| 4096 | <row> | |
| 4097 | <entry spanname="id"><constant>V4L2_CID_FLASH_TORCH_INTENSITY</constant></entry> | |
| 4098 | <entry>integer</entry> | |
| 4099 | </row> | |
| 4100 | <row> | |
| 4101 | <entry spanname="descr">Intensity of the flash LED in | |
| 4102 | torch mode (V4L2_FLASH_LED_MODE_TORCH). The unit should be | |
| 4103 | milliamps (mA) if possible. Setting this control may not | |
| 4104 | be possible in presence of some faults. See | |
| 4105 | V4L2_CID_FLASH_FAULT.</entry> | |
| 4106 | </row> | |
| 4107 | <row> | |
| 4108 | <entry spanname="id"><constant>V4L2_CID_FLASH_INDICATOR_INTENSITY</constant></entry> | |
| 4109 | <entry>integer</entry> | |
| 4110 | </row> | |
| 4111 | <row> | |
| 4112 | <entry spanname="descr">Intensity of the indicator LED. | |
| 4113 | The indicator LED may be fully independent of the flash | |
| 4114 | LED. The unit should be microamps (uA) if possible.</entry> | |
| 4115 | </row> | |
| 4116 | <row> | |
| 4117 | <entry spanname="id"><constant>V4L2_CID_FLASH_FAULT</constant></entry> | |
| 4118 | <entry>bitmask</entry> | |
| 4119 | </row> | |
| 4120 | <row> | |
| 4121 | <entry spanname="descr">Faults related to the flash. The | |
| 4122 | faults tell about specific problems in the flash chip | |
| 4123 | itself or the LEDs attached to it. Faults may prevent | |
| 4124 | further use of some of the flash controls. In particular, | |
| 4125 | V4L2_CID_FLASH_LED_MODE is set to V4L2_FLASH_LED_MODE_NONE | |
| 4126 | if the fault affects the flash LED. Exactly which faults | |
| 4127 | have such an effect is chip dependent. Reading the faults | |
| 4128 | resets the control and returns the chip to a usable state | |
| 4129 | if possible.</entry> | |
| 4130 | </row> | |
| 4131 | <row> | |
| 4132 | <entrytbl spanname="descr" cols="2"> | |
| 4133 | <tbody valign="top"> | |
| 4134 | <row> | |
| 4135 | <entry><constant>V4L2_FLASH_FAULT_OVER_VOLTAGE</constant></entry> | |
| 4136 | <entry>Flash controller voltage to the flash LED | |
| 4137 | has exceeded the limit specific to the flash | |
| 4138 | controller.</entry> | |
| 4139 | </row> | |
| 4140 | <row> | |
| 4141 | <entry><constant>V4L2_FLASH_FAULT_TIMEOUT</constant></entry> | |
| 4142 | <entry>The flash strobe was still on when | |
| 4143 | the timeout set by the user --- | |
| 4144 | V4L2_CID_FLASH_TIMEOUT control --- has expired. | |
| 4145 | Not all flash controllers may set this in all | |
| 4146 | such conditions.</entry> | |
| 4147 | </row> | |
| 4148 | <row> | |
| 4149 | <entry><constant>V4L2_FLASH_FAULT_OVER_TEMPERATURE</constant></entry> | |
| 4150 | <entry>The flash controller has overheated.</entry> | |
| 4151 | </row> | |
| 4152 | <row> | |
| 4153 | <entry><constant>V4L2_FLASH_FAULT_SHORT_CIRCUIT</constant></entry> | |
| 4154 | <entry>The short circuit protection of the flash | |
| 4155 | controller has been triggered.</entry> | |
| 4156 | </row> | |
| 4157 | <row> | |
| 4158 | <entry><constant>V4L2_FLASH_FAULT_OVER_CURRENT</constant></entry> | |
| 4159 | <entry>Current in the LED power supply has exceeded the limit | |
| 4160 | specific to the flash controller.</entry> | |
| 4161 | </row> | |
| 4162 | <row> | |
| 4163 | <entry><constant>V4L2_FLASH_FAULT_INDICATOR</constant></entry> | |
| 4164 | <entry>The flash controller has detected a short or open | |
| 4165 | circuit condition on the indicator LED.</entry> | |
| 4166 | </row> | |
| 4167 | </tbody> | |
| 4168 | </entrytbl> | |
| 4169 | </row> | |
| 4170 | <row> | |
| 4171 | <entry spanname="id"><constant>V4L2_CID_FLASH_CHARGE</constant></entry> | |
| 4172 | <entry>boolean</entry> | |
| 4173 | </row> | |
| 4174 | <row><entry spanname="descr">Enable or disable charging of the xenon | |
| 4175 | flash capacitor.</entry> | |
| 4176 | </row> | |
| 4177 | <row> | |
| 4178 | <entry spanname="id"><constant>V4L2_CID_FLASH_READY</constant></entry> | |
| 4179 | <entry>boolean</entry> | |
| 4180 | </row> | |
| 4181 | <row> | |
| 4182 | <entry spanname="descr">Is the flash ready to strobe? | |
| 4183 | Xenon flashes require their capacitors charged before | |
| 4184 | strobing. LED flashes often require a cooldown period | |
| 4185 | after strobe during which another strobe will not be | |
| 4186 | possible. This is a read-only control.</entry> | |
| 4187 | </row> | |
| 4188 | <row><entry></entry></row> | |
| 4189 | </tbody> | |
| 4190 | </tgroup> | |
| 4191 | </table> | |
| 4192 | </section> | |
| 7ba85fa4 | 4193 | </section> |
| 29fa0eed SN |
4194 | </section> |
| 4195 | ||
| 4196 | <section id="jpeg-controls"> | |
| 4197 | <title>JPEG Control Reference</title> | |
| 4198 | <para>The JPEG class includes controls for common features of JPEG | |
| 4199 | encoders and decoders. Currently it includes features for codecs | |
| 4200 | implementing progressive baseline DCT compression process with | |
| 4201 | Huffman entrophy coding.</para> | |
| 4202 | <table pgwide="1" frame="none" id="jpeg-control-id"> | |
| 4203 | <title>JPEG Control IDs</title> | |
| 4204 | ||
| 4205 | <tgroup cols="4"> | |
| 4206 | <colspec colname="c1" colwidth="1*" /> | |
| 4207 | <colspec colname="c2" colwidth="6*" /> | |
| 4208 | <colspec colname="c3" colwidth="2*" /> | |
| 4209 | <colspec colname="c4" colwidth="6*" /> | |
| 4210 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 4211 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 4212 | <thead> | |
| 4213 | <row> | |
| 4214 | <entry spanname="id" align="left">ID</entry> | |
| 4215 | <entry align="left">Type</entry> | |
| 4216 | </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> | |
| 4217 | </row> | |
| 4218 | </thead> | |
| 4219 | <tbody valign="top"> | |
| 4220 | <row><entry></entry></row> | |
| 4221 | <row> | |
| 4222 | <entry spanname="id"><constant>V4L2_CID_JPEG_CLASS</constant> </entry> | |
| 4223 | <entry>class</entry> | |
| 4224 | </row><row><entry spanname="descr">The JPEG class descriptor. Calling | |
| 4225 | &VIDIOC-QUERYCTRL; for this control will return a description of this | |
| 4226 | control class. | |
| 4227 | ||
| 4228 | </entry> | |
| 4229 | </row> | |
| 4230 | <row> | |
| 4231 | <entry spanname="id"><constant>V4L2_CID_JPEG_CHROMA_SUBSAMPLING</constant></entry> | |
| 4232 | <entry>menu</entry> | |
| 4233 | </row> | |
| 579e92ff | 4234 | <row id="v4l2-jpeg-chroma-subsampling"> |
| 29fa0eed SN |
4235 | <entry spanname="descr">The chroma subsampling factors describe how |
| 4236 | each component of an input image is sampled, in respect to maximum | |
| 4237 | sample rate in each spatial dimension. See <xref linkend="itu-t81"/>, | |
| 4238 | clause A.1.1. for more details. The <constant> | |
| 4239 | V4L2_CID_JPEG_CHROMA_SUBSAMPLING</constant> control determines how | |
| 4240 | Cb and Cr components are downsampled after coverting an input image | |
| 4241 | from RGB to Y'CbCr color space. | |
| 4242 | </entry> | |
| 4243 | </row> | |
| ec3ed85f | 4244 | <row> |
| 29fa0eed SN |
4245 | <entrytbl spanname="descr" cols="2"> |
| 4246 | <tbody valign="top"> | |
| 4247 | <row> | |
| 4248 | <entry><constant>V4L2_JPEG_CHROMA_SUBSAMPLING_444</constant> | |
| 4249 | </entry><entry>No chroma subsampling, each pixel has | |
| 4250 | Y, Cr and Cb values.</entry> | |
| 4251 | </row> | |
| 4252 | <row> | |
| 4253 | <entry><constant>V4L2_JPEG_CHROMA_SUBSAMPLING_422</constant> | |
| 4254 | </entry><entry>Horizontally subsample Cr, Cb components | |
| 4255 | by a factor of 2.</entry> | |
| 4256 | </row> | |
| 4257 | <row> | |
| 4258 | <entry><constant>V4L2_JPEG_CHROMA_SUBSAMPLING_420</constant> | |
| 4259 | </entry><entry>Subsample Cr, Cb components horizontally | |
| 4260 | and vertically by 2.</entry> | |
| 4261 | </row> | |
| 4262 | <row> | |
| 4263 | <entry><constant>V4L2_JPEG_CHROMA_SUBSAMPLING_411</constant> | |
| 4264 | </entry><entry>Horizontally subsample Cr, Cb components | |
| 4265 | by a factor of 4.</entry> | |
| 4266 | </row> | |
| 4267 | <row> | |
| 4268 | <entry><constant>V4L2_JPEG_CHROMA_SUBSAMPLING_410</constant> | |
| 4269 | </entry><entry>Subsample Cr, Cb components horizontally | |
| 4270 | by 4 and vertically by 2.</entry> | |
| 4271 | </row> | |
| 4272 | <row> | |
| 4273 | <entry><constant>V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY</constant> | |
| 4274 | </entry><entry>Use only luminance component.</entry> | |
| 4275 | </row> | |
| 4276 | </tbody> | |
| 4277 | </entrytbl> | |
| 4278 | </row> | |
| 4279 | <row> | |
| 4280 | <entry spanname="id"><constant>V4L2_CID_JPEG_RESTART_INTERVAL</constant> | |
| 4281 | </entry><entry>integer</entry> | |
| 4282 | </row> | |
| 4283 | <row><entry spanname="descr"> | |
| 4284 | The restart interval determines an interval of inserting RSTm | |
| 4285 | markers (m = 0..7). The purpose of these markers is to additionally | |
| 4286 | reinitialize the encoder process, in order to process blocks of | |
| 4287 | an image independently. | |
| 4288 | For the lossy compression processes the restart interval unit is | |
| 4289 | MCU (Minimum Coded Unit) and its value is contained in DRI | |
| 4290 | (Define Restart Interval) marker. If <constant> | |
| 4291 | V4L2_CID_JPEG_RESTART_INTERVAL</constant> control is set to 0, | |
| 4292 | DRI and RSTm markers will not be inserted. | |
| 4293 | </entry> | |
| 4294 | </row> | |
| 4295 | <row id="jpeg-quality-control"> | |
| 7a1d082c | 4296 | <entry spanname="id"><constant>V4L2_CID_JPEG_COMPRESSION_QUALITY</constant></entry> |
| 29fa0eed SN |
4297 | <entry>integer</entry> |
| 4298 | </row> | |
| 4299 | <row> | |
| 4300 | <entry spanname="descr"> | |
| 7a1d082c | 4301 | <constant>V4L2_CID_JPEG_COMPRESSION_QUALITY</constant> control |
| 29fa0eed SN |
4302 | determines trade-off between image quality and size. |
| 4303 | It provides simpler method for applications to control image quality, | |
| 4304 | without a need for direct reconfiguration of luminance and chrominance | |
| 4305 | quantization tables. | |
| 4306 | ||
| 4307 | In cases where a driver uses quantization tables configured directly | |
| 4308 | by an application, using interfaces defined elsewhere, <constant> | |
| 7a1d082c | 4309 | V4L2_CID_JPEG_COMPRESSION_QUALITY</constant> control should be set |
| 29fa0eed | 4310 | by driver to 0. |
| 7ba85fa4 | 4311 | |
| 29fa0eed SN |
4312 | <para>The value range of this control is driver-specific. Only |
| 4313 | positive, non-zero values are meaningful. The recommended range | |
| 4314 | is 1 - 100, where larger values correspond to better image quality. | |
| 4315 | </para> | |
| 4316 | </entry> | |
| 4317 | </row> | |
| 4318 | <row id="jpeg-active-marker-control"> | |
| 4319 | <entry spanname="id"><constant>V4L2_CID_JPEG_ACTIVE_MARKER</constant></entry> | |
| 4320 | <entry>bitmask</entry> | |
| 4321 | </row> | |
| 4322 | <row> | |
| 4323 | <entry spanname="descr">Specify which JPEG markers are included | |
| 4324 | in compressed stream. This control is valid only for encoders. | |
| 4325 | </entry> | |
| 4326 | </row> | |
| 4327 | <row> | |
| 4328 | <entrytbl spanname="descr" cols="2"> | |
| 4329 | <tbody valign="top"> | |
| 4330 | <row> | |
| 4331 | <entry><constant>V4L2_JPEG_ACTIVE_MARKER_APP0</constant></entry> | |
| 4332 | <entry>Application data segment APP<subscript>0</subscript>.</entry> | |
| 4333 | </row><row> | |
| 4334 | <entry><constant>V4L2_JPEG_ACTIVE_MARKER_APP1</constant></entry> | |
| 4335 | <entry>Application data segment APP<subscript>1</subscript>.</entry> | |
| 4336 | </row><row> | |
| 4337 | <entry><constant>V4L2_JPEG_ACTIVE_MARKER_COM</constant></entry> | |
| 4338 | <entry>Comment segment.</entry> | |
| 4339 | </row><row> | |
| 4340 | <entry><constant>V4L2_JPEG_ACTIVE_MARKER_DQT</constant></entry> | |
| 4341 | <entry>Quantization tables segment.</entry> | |
| 4342 | </row><row> | |
| 4343 | <entry><constant>V4L2_JPEG_ACTIVE_MARKER_DHT</constant></entry> | |
| 4344 | <entry>Huffman tables segment.</entry> | |
| 4345 | </row> | |
| 4346 | </tbody> | |
| 4347 | </entrytbl> | |
| 4348 | </row> | |
| 4349 | <row><entry></entry></row> | |
| 4350 | </tbody> | |
| 4351 | </tgroup> | |
| 4352 | </table> | |
| 4353 | <para>For more details about JPEG specification, refer | |
| 4354 | to <xref linkend="itu-t81"/>, <xref linkend="jfif"/>, | |
| 4355 | <xref linkend="w3c-jpeg-jfif"/>.</para> | |
| 7ba85fa4 | 4356 | </section> |
| 8c9d236e SA |
4357 | |
| 4358 | <section id="image-source-controls"> | |
| 4359 | <title>Image Source Control Reference</title> | |
| 4360 | ||
| 4361 | <note> | |
| 4362 | <title>Experimental</title> | |
| 4363 | ||
| 4364 | <para>This is an <link | |
| 4365 | linkend="experimental">experimental</link> interface and may | |
| 4366 | change in the future.</para> | |
| 4367 | </note> | |
| 4368 | ||
| 4369 | <para> | |
| 4370 | The Image Source control class is intended for low-level | |
| 4371 | control of image source devices such as image sensors. The | |
| 4372 | devices feature an analogue to digital converter and a bus | |
| 4373 | transmitter to transmit the image data out of the device. | |
| 4374 | </para> | |
| 4375 | ||
| 4376 | <table pgwide="1" frame="none" id="image-source-control-id"> | |
| 4377 | <title>Image Source Control IDs</title> | |
| 4378 | ||
| 4379 | <tgroup cols="4"> | |
| 4380 | <colspec colname="c1" colwidth="1*" /> | |
| 4381 | <colspec colname="c2" colwidth="6*" /> | |
| 4382 | <colspec colname="c3" colwidth="2*" /> | |
| 4383 | <colspec colname="c4" colwidth="6*" /> | |
| 4384 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 4385 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 4386 | <thead> | |
| 4387 | <row> | |
| 4388 | <entry spanname="id" align="left">ID</entry> | |
| 4389 | <entry align="left">Type</entry> | |
| 4390 | </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> | |
| 4391 | </row> | |
| 4392 | </thead> | |
| 4393 | <tbody valign="top"> | |
| 4394 | <row><entry></entry></row> | |
| 4395 | <row> | |
| 4396 | <entry spanname="id"><constant>V4L2_CID_IMAGE_SOURCE_CLASS</constant></entry> | |
| 4397 | <entry>class</entry> | |
| 4398 | </row> | |
| 4399 | <row> | |
| 4400 | <entry spanname="descr">The IMAGE_SOURCE class descriptor.</entry> | |
| 4401 | </row> | |
| 4402 | <row> | |
| 4403 | <entry spanname="id"><constant>V4L2_CID_VBLANK</constant></entry> | |
| 4404 | <entry>integer</entry> | |
| 4405 | </row> | |
| 4406 | <row> | |
| 4407 | <entry spanname="descr">Vertical blanking. The idle period | |
| 4408 | after every frame during which no image data is produced. | |
| 4409 | The unit of vertical blanking is a line. Every line has | |
| 4410 | length of the image width plus horizontal blanking at the | |
| 4411 | pixel rate defined by | |
| 4412 | <constant>V4L2_CID_PIXEL_RATE</constant> control in the | |
| 4413 | same sub-device.</entry> | |
| 4414 | </row> | |
| 4415 | <row> | |
| 4416 | <entry spanname="id"><constant>V4L2_CID_HBLANK</constant></entry> | |
| 4417 | <entry>integer</entry> | |
| 4418 | </row> | |
| 4419 | <row> | |
| 4420 | <entry spanname="descr">Horizontal blanking. The idle | |
| 4421 | period after every line of image data during which no | |
| 4422 | image data is produced. The unit of horizontal blanking is | |
| 4423 | pixels.</entry> | |
| 4424 | </row> | |
| 4425 | <row> | |
| 4426 | <entry spanname="id"><constant>V4L2_CID_ANALOGUE_GAIN</constant></entry> | |
| 4427 | <entry>integer</entry> | |
| 4428 | </row> | |
| 4429 | <row> | |
| 4430 | <entry spanname="descr">Analogue gain is gain affecting | |
| 4431 | all colour components in the pixel matrix. The gain | |
| 4432 | operation is performed in the analogue domain before A/D | |
| 4433 | conversion. | |
| 4434 | </entry> | |
| 4435 | </row> | |
| 4436 | <row><entry></entry></row> | |
| 4437 | </tbody> | |
| 4438 | </tgroup> | |
| 4439 | </table> | |
| 4440 | ||
| 4441 | </section> | |
| 4442 | ||
| c643ee13 SA |
4443 | <section id="image-process-controls"> |
| 4444 | <title>Image Process Control Reference</title> | |
| 4445 | ||
| 4446 | <note> | |
| 4447 | <title>Experimental</title> | |
| 4448 | ||
| 4449 | <para>This is an <link | |
| 4450 | linkend="experimental">experimental</link> interface and may | |
| 4451 | change in the future.</para> | |
| 4452 | </note> | |
| 4453 | ||
| 4454 | <para> | |
| 4455 | The Image Source control class is intended for low-level control of | |
| 4456 | image processing functions. Unlike | |
| 4457 | <constant>V4L2_CID_IMAGE_SOURCE_CLASS</constant>, the controls in | |
| 4458 | this class affect processing the image, and do not control capturing | |
| 4459 | of it. | |
| 4460 | </para> | |
| 4461 | ||
| 4462 | <table pgwide="1" frame="none" id="image-process-control-id"> | |
| 4463 | <title>Image Source Control IDs</title> | |
| 4464 | ||
| 4465 | <tgroup cols="4"> | |
| 4466 | <colspec colname="c1" colwidth="1*" /> | |
| 4467 | <colspec colname="c2" colwidth="6*" /> | |
| 4468 | <colspec colname="c3" colwidth="2*" /> | |
| 4469 | <colspec colname="c4" colwidth="6*" /> | |
| 4470 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 4471 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 4472 | <thead> | |
| 4473 | <row> | |
| 4474 | <entry spanname="id" align="left">ID</entry> | |
| 4475 | <entry align="left">Type</entry> | |
| 4476 | </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> | |
| 4477 | </row> | |
| 4478 | </thead> | |
| 4479 | <tbody valign="top"> | |
| 4480 | <row><entry></entry></row> | |
| 4481 | <row> | |
| 4482 | <entry spanname="id"><constant>V4L2_CID_IMAGE_PROC_CLASS</constant></entry> | |
| 4483 | <entry>class</entry> | |
| 4484 | </row> | |
| 4485 | <row> | |
| 4486 | <entry spanname="descr">The IMAGE_PROC class descriptor.</entry> | |
| 4487 | </row> | |
| 4488 | <row> | |
| 4489 | <entry spanname="id"><constant>V4L2_CID_LINK_FREQ</constant></entry> | |
| 4490 | <entry>integer menu</entry> | |
| 4491 | </row> | |
| 4492 | <row> | |
| 4493 | <entry spanname="descr">Data bus frequency. Together with the | |
| 4494 | media bus pixel code, bus type (clock cycles per sample), the | |
| 4495 | data bus frequency defines the pixel rate | |
| 4496 | (<constant>V4L2_CID_PIXEL_RATE</constant>) in the | |
| 4497 | pixel array (or possibly elsewhere, if the device is not an | |
| 4498 | image sensor). The frame rate can be calculated from the pixel | |
| 4499 | clock, image width and height and horizontal and vertical | |
| 4500 | blanking. While the pixel rate control may be defined elsewhere | |
| 4501 | than in the subdev containing the pixel array, the frame rate | |
| 4502 | cannot be obtained from that information. This is because only | |
| 4503 | on the pixel array it can be assumed that the vertical and | |
| 4504 | horizontal blanking information is exact: no other blanking is | |
| 4505 | allowed in the pixel array. The selection of frame rate is | |
| 4506 | performed by selecting the desired horizontal and vertical | |
| 4507 | blanking. The unit of this control is Hz. </entry> | |
| 4508 | </row> | |
| 4509 | <row> | |
| 4510 | <entry spanname="id"><constant>V4L2_CID_PIXEL_RATE</constant></entry> | |
| 4511 | <entry>64-bit integer</entry> | |
| 4512 | </row> | |
| 4513 | <row> | |
| 4514 | <entry spanname="descr">Pixel rate in the source pads of | |
| 4515 | the subdev. This control is read-only and its unit is | |
| 4516 | pixels / second. | |
| 4517 | </entry> | |
| 4518 | </row> | |
| 5ebef0fb LP |
4519 | <row> |
| 4520 | <entry spanname="id"><constant>V4L2_CID_TEST_PATTERN</constant></entry> | |
| 4521 | <entry>menu</entry> | |
| 4522 | </row> | |
| 4523 | <row id="v4l2-test-pattern"> | |
| 4524 | <entry spanname="descr"> Some capture/display/sensor devices have | |
| 4525 | the capability to generate test pattern images. These hardware | |
| 4526 | specific test patterns can be used to test if a device is working | |
| 4527 | properly.</entry> | |
| 4528 | </row> | |
| c643ee13 SA |
4529 | <row><entry></entry></row> |
| 4530 | </tbody> | |
| 4531 | </tgroup> | |
| 4532 | </table> | |
| 4533 | ||
| 4534 | </section> | |
| 1248c7cb HV |
4535 | |
| 4536 | <section id="dv-controls"> | |
| 4537 | <title>Digital Video Control Reference</title> | |
| 4538 | ||
| 4539 | <note> | |
| 4540 | <title>Experimental</title> | |
| 4541 | ||
| 4542 | <para>This is an <link | |
| 4543 | linkend="experimental">experimental</link> interface and may | |
| 4544 | change in the future.</para> | |
| 4545 | </note> | |
| 4546 | ||
| 4547 | <para> | |
| 4548 | The Digital Video control class is intended to control receivers | |
| 4549 | and transmitters for <ulink url="http://en.wikipedia.org/wiki/Vga">VGA</ulink>, | |
| 4550 | <ulink url="http://en.wikipedia.org/wiki/Digital_Visual_Interface">DVI</ulink> | |
| 4551 | (Digital Visual Interface), HDMI (<xref linkend="hdmi" />) and DisplayPort (<xref linkend="dp" />). | |
| 4552 | These controls are generally expected to be private to the receiver or transmitter | |
| 4553 | subdevice that implements them, so they are only exposed on the | |
| 4554 | <filename>/dev/v4l-subdev*</filename> device node. | |
| 4555 | </para> | |
| 4556 | ||
| 4557 | <para>Note that these devices can have multiple input or output pads which are | |
| 4558 | hooked up to e.g. HDMI connectors. Even though the subdevice will receive or | |
| 4559 | transmit video from/to only one of those pads, the other pads can still be | |
| 4560 | active when it comes to EDID (Extended Display Identification Data, | |
| 4561 | <xref linkend="vesaedid" />) and HDCP (High-bandwidth Digital Content | |
| 4562 | Protection System, <xref linkend="hdcp" />) processing, allowing the device | |
| 4563 | to do the fairly slow EDID/HDCP handling in advance. This allows for quick | |
| 4564 | switching between connectors.</para> | |
| 4565 | ||
| 4566 | <para>These pads appear in several of the controls in this section as | |
| 4567 | bitmasks, one bit for each pad. Bit 0 corresponds to pad 0, bit 1 to pad 1, | |
| 4568 | etc. The maximum value of the control is the set of valid pads.</para> | |
| 4569 | ||
| 4570 | <table pgwide="1" frame="none" id="dv-control-id"> | |
| 4571 | <title>Digital Video Control IDs</title> | |
| 4572 | ||
| 4573 | <tgroup cols="4"> | |
| 4574 | <colspec colname="c1" colwidth="1*" /> | |
| 4575 | <colspec colname="c2" colwidth="6*" /> | |
| 4576 | <colspec colname="c3" colwidth="2*" /> | |
| 4577 | <colspec colname="c4" colwidth="6*" /> | |
| 4578 | <spanspec namest="c1" nameend="c2" spanname="id" /> | |
| 4579 | <spanspec namest="c2" nameend="c4" spanname="descr" /> | |
| 4580 | <thead> | |
| 4581 | <row> | |
| 4582 | <entry spanname="id" align="left">ID</entry> | |
| 4583 | <entry align="left">Type</entry> | |
| 4584 | </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> | |
| 4585 | </row> | |
| 4586 | </thead> | |
| 4587 | <tbody valign="top"> | |
| 4588 | <row><entry></entry></row> | |
| 4589 | <row> | |
| 4590 | <entry spanname="id"><constant>V4L2_CID_DV_CLASS</constant></entry> | |
| 4591 | <entry>class</entry> | |
| 4592 | </row> | |
| 4593 | <row> | |
| 4594 | <entry spanname="descr">The Digital Video class descriptor.</entry> | |
| 4595 | </row> | |
| 4596 | <row> | |
| 4597 | <entry spanname="id"><constant>V4L2_CID_DV_TX_HOTPLUG</constant></entry> | |
| 4598 | <entry>bitmask</entry> | |
| 4599 | </row> | |
| 4600 | <row> | |
| 4601 | <entry spanname="descr">Many connectors have a hotplug pin which is high | |
| 4602 | if EDID information is available from the source. This control shows the | |
| 4603 | state of the hotplug pin as seen by the transmitter. | |
| 4604 | Each bit corresponds to an output pad on the transmitter. If an output pad | |
| 4605 | does not have an associated hotplug pin, then the bit for that pad will be 0. | |
| 4606 | This read-only control is applicable to DVI-D, HDMI and DisplayPort connectors. | |
| 4607 | </entry> | |
| 4608 | </row> | |
| 4609 | <row> | |
| 4610 | <entry spanname="id"><constant>V4L2_CID_DV_TX_RXSENSE</constant></entry> | |
| 4611 | <entry>bitmask</entry> | |
| 4612 | </row> | |
| 4613 | <row> | |
| 4614 | <entry spanname="descr">Rx Sense is the detection of pull-ups on the TMDS | |
| 4615 | clock lines. This normally means that the sink has left/entered standby (i.e. | |
| 4616 | the transmitter can sense that the receiver is ready to receive video). | |
| 4617 | Each bit corresponds to an output pad on the transmitter. If an output pad | |
| 4618 | does not have an associated Rx Sense, then the bit for that pad will be 0. | |
| 4619 | This read-only control is applicable to DVI-D and HDMI devices. | |
| 4620 | </entry> | |
| 4621 | </row> | |
| 4622 | <row> | |
| 4623 | <entry spanname="id"><constant>V4L2_CID_DV_TX_EDID_PRESENT</constant></entry> | |
| 4624 | <entry>bitmask</entry> | |
| 4625 | </row> | |
| 4626 | <row> | |
| 4627 | <entry spanname="descr">When the transmitter sees the hotplug signal from the | |
| 4628 | receiver it will attempt to read the EDID. If set, then the transmitter has read | |
| 4629 | at least the first block (= 128 bytes). | |
| 4630 | Each bit corresponds to an output pad on the transmitter. If an output pad | |
| 4631 | does not support EDIDs, then the bit for that pad will be 0. | |
| 4632 | This read-only control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors. | |
| 4633 | </entry> | |
| 4634 | </row> | |
| 4635 | <row> | |
| 4636 | <entry spanname="id"><constant>V4L2_CID_DV_TX_MODE</constant></entry> | |
| 4637 | <entry id="v4l2-dv-tx-mode">enum v4l2_dv_tx_mode</entry> | |
| 4638 | </row> | |
| 4639 | <row> | |
| 4640 | <entry spanname="descr">HDMI transmitters can transmit in DVI-D mode (just video) | |
| 4641 | or in HDMI mode (video + audio + auxiliary data). This control selects which mode | |
| 4642 | to use: V4L2_DV_TX_MODE_DVI_D or V4L2_DV_TX_MODE_HDMI. | |
| 4643 | This control is applicable to HDMI connectors. | |
| 4644 | </entry> | |
| 4645 | </row> | |
| 4646 | <row> | |
| 4647 | <entry spanname="id"><constant>V4L2_CID_DV_TX_RGB_RANGE</constant></entry> | |
| 4648 | <entry id="v4l2-dv-rgb-range">enum v4l2_dv_rgb_range</entry> | |
| 4649 | </row> | |
| 4650 | <row> | |
| 4651 | <entry spanname="descr">Select the quantization range for RGB output. V4L2_DV_RANGE_AUTO | |
| 4652 | follows the RGB quantization range specified in the standard for the video interface | |
| 4653 | (ie. <xref linkend="cea861" /> for HDMI). V4L2_DV_RANGE_LIMITED and V4L2_DV_RANGE_FULL override the standard | |
| 4654 | to be compatible with sinks that have not implemented the standard correctly | |
| 4655 | (unfortunately quite common for HDMI and DVI-D). Full range allows all possible values to be | |
| 4656 | used whereas limited range sets the range to (16 << (N-8)) - (235 << (N-8)) | |
| 4657 | where N is the number of bits per component. | |
| 4658 | This control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors. | |
| 4659 | </entry> | |
| 4660 | </row> | |
| 4661 | <row> | |
| 4662 | <entry spanname="id"><constant>V4L2_CID_DV_RX_POWER_PRESENT</constant></entry> | |
| 4663 | <entry>bitmask</entry> | |
| 4664 | </row> | |
| 4665 | <row> | |
| 4666 | <entry spanname="descr">Detects whether the receiver receives power from the source | |
| 4667 | (e.g. HDMI carries 5V on one of the pins). This is often used to power an eeprom | |
| 4668 | which contains EDID information, such that the source can read the EDID even if | |
| 4669 | the sink is in standby/power off. | |
| 4670 | Each bit corresponds to an input pad on the transmitter. If an input pad | |
| 4671 | cannot detect whether power is present, then the bit for that pad will be 0. | |
| 4672 | This read-only control is applicable to DVI-D, HDMI and DisplayPort connectors. | |
| 4673 | </entry> | |
| 4674 | </row> | |
| 4675 | <row> | |
| 4676 | <entry spanname="id"><constant>V4L2_CID_DV_RX_RGB_RANGE</constant></entry> | |
| 4677 | <entry>enum v4l2_dv_rgb_range</entry> | |
| 4678 | </row> | |
| 4679 | <row> | |
| 4680 | <entry spanname="descr">Select the quantization range for RGB input. V4L2_DV_RANGE_AUTO | |
| 4681 | follows the RGB quantization range specified in the standard for the video interface | |
| 4682 | (ie. <xref linkend="cea861" /> for HDMI). V4L2_DV_RANGE_LIMITED and V4L2_DV_RANGE_FULL override the standard | |
| 4683 | to be compatible with sources that have not implemented the standard correctly | |
| 4684 | (unfortunately quite common for HDMI and DVI-D). Full range allows all possible values to be | |
| 4685 | used whereas limited range sets the range to (16 << (N-8)) - (235 << (N-8)) | |
| 4686 | where N is the number of bits per component. | |
| 4687 | This control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors. | |
| 4688 | </entry> | |
| 4689 | </row> | |
| 4690 | <row><entry></entry></row> | |
| 4691 | </tbody> | |
| 4692 | </tgroup> | |
| 4693 | </table> | |
| 4694 | ||
| 4695 | </section> | |
| 8e080c2e | 4696 | </section> |