1<?xml version="1.0" encoding="utf-8"?> 2<!-- Copyright (C) 2016 The Android Open Source Project 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15--> 16<metadata xmlns="http://schemas.android.com/service/camera/metadata/" 17xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 18xsi:schemaLocation="http://schemas.android.com/service/camera/metadata/ metadata_properties.xsd"> 19 20 <tags> 21 <tag id="BC"> 22 Needed for backwards compatibility with old Java API 23 </tag> 24 <tag id="V1"> 25 New features for first camera 2 release (API1) 26 </tag> 27 <tag id="RAW"> 28 Needed for useful RAW image processing and DNG file support 29 </tag> 30 <tag id="HAL2"> 31 Entry is only used by camera device HAL 2.x 32 </tag> 33 <tag id="FULL"> 34 Entry is required for full hardware level devices, and optional for other hardware levels 35 </tag> 36 <tag id="DEPTH"> 37 Entry is required for the depth capability. 38 </tag> 39 <tag id="REPROC"> 40 Entry is required for the YUV or PRIVATE reprocessing capability. 41 </tag> 42 <tag id="FUTURE"> 43 Entry is under-specified and is not required for now. This is for book-keeping purpose, 44 do not implement or use it, it may be revised for future. 45 </tag> 46 </tags> 47 48 <types> 49 <typedef name="pairFloatFloat"> 50 <language name="java">android.util.Pair<Float,Float></language> 51 </typedef> 52 <typedef name="pairDoubleDouble"> 53 <language name="java">android.util.Pair<Double,Double></language> 54 </typedef> 55 <typedef name="rectangle"> 56 <language name="java">android.graphics.Rect</language> 57 </typedef> 58 <typedef name="size"> 59 <language name="java">android.util.Size</language> 60 </typedef> 61 <typedef name="string"> 62 <language name="java">String</language> 63 </typedef> 64 <typedef name="boolean"> 65 <language name="java">boolean</language> 66 </typedef> 67 <typedef name="imageFormat"> 68 <language name="java">int</language> 69 </typedef> 70 <typedef name="streamConfigurationMap"> 71 <language name="java">android.hardware.camera2.params.StreamConfigurationMap</language> 72 </typedef> 73 <typedef name="streamConfiguration"> 74 <language name="java">android.hardware.camera2.params.StreamConfiguration</language> 75 </typedef> 76 <typedef name="streamConfigurationDuration"> 77 <language name="java">android.hardware.camera2.params.StreamConfigurationDuration</language> 78 </typedef> 79 <typedef name="face"> 80 <language name="java">android.hardware.camera2.params.Face</language> 81 </typedef> 82 <typedef name="meteringRectangle"> 83 <language name="java">android.hardware.camera2.params.MeteringRectangle</language> 84 </typedef> 85 <typedef name="rangeFloat"> 86 <language name="java">android.util.Range<Float></language> 87 </typedef> 88 <typedef name="rangeInt"> 89 <language name="java">android.util.Range<Integer></language> 90 </typedef> 91 <typedef name="rangeLong"> 92 <language name="java">android.util.Range<Long></language> 93 </typedef> 94 <typedef name="colorSpaceTransform"> 95 <language name="java">android.hardware.camera2.params.ColorSpaceTransform</language> 96 </typedef> 97 <typedef name="rggbChannelVector"> 98 <language name="java">android.hardware.camera2.params.RggbChannelVector</language> 99 </typedef> 100 <typedef name="blackLevelPattern"> 101 <language name="java">android.hardware.camera2.params.BlackLevelPattern</language> 102 </typedef> 103 <typedef name="enumList"> 104 <language name="java">int</language> 105 </typedef> 106 <typedef name="sizeF"> 107 <language name="java">android.util.SizeF</language> 108 </typedef> 109 <typedef name="point"> 110 <language name="java">android.graphics.Point</language> 111 </typedef> 112 <typedef name="tonemapCurve"> 113 <language name="java">android.hardware.camera2.params.TonemapCurve</language> 114 </typedef> 115 <typedef name="lensShadingMap"> 116 <language name="java">android.hardware.camera2.params.LensShadingMap</language> 117 </typedef> 118 <typedef name="location"> 119 <language name="java">android.location.Location</language> 120 </typedef> 121 <typedef name="highSpeedVideoConfiguration"> 122 <language name="java">android.hardware.camera2.params.HighSpeedVideoConfiguration</language> 123 </typedef> 124 <typedef name="reprocessFormatsMap"> 125 <language name="java">android.hardware.camera2.params.ReprocessFormatsMap</language> 126 </typedef> 127 </types> 128 129 <namespace name="android"> 130 <section name="colorCorrection"> 131 <controls> 132 <entry name="mode" type="byte" visibility="public" enum="true" hwlevel="full"> 133 <enum> 134 <value>TRANSFORM_MATRIX 135 <notes>Use the android.colorCorrection.transform matrix 136 and android.colorCorrection.gains to do color conversion. 137 138 All advanced white balance adjustments (not specified 139 by our white balance pipeline) must be disabled. 140 141 If AWB is enabled with `android.control.awbMode != OFF`, then 142 TRANSFORM_MATRIX is ignored. The camera device will override 143 this value to either FAST or HIGH_QUALITY. 144 </notes> 145 </value> 146 <value>FAST 147 <notes>Color correction processing must not slow down 148 capture rate relative to sensor raw output. 149 150 Advanced white balance adjustments above and beyond 151 the specified white balance pipeline may be applied. 152 153 If AWB is enabled with `android.control.awbMode != OFF`, then 154 the camera device uses the last frame's AWB values 155 (or defaults if AWB has never been run). 156 </notes> 157 </value> 158 <value>HIGH_QUALITY 159 <notes>Color correction processing operates at improved 160 quality but the capture rate might be reduced (relative to sensor 161 raw output rate) 162 163 Advanced white balance adjustments above and beyond 164 the specified white balance pipeline may be applied. 165 166 If AWB is enabled with `android.control.awbMode != OFF`, then 167 the camera device uses the last frame's AWB values 168 (or defaults if AWB has never been run). 169 </notes> 170 </value> 171 </enum> 172 173 <description> 174 The mode control selects how the image data is converted from the 175 sensor's native color into linear sRGB color. 176 </description> 177 <details> 178 When auto-white balance (AWB) is enabled with android.control.awbMode, this 179 control is overridden by the AWB routine. When AWB is disabled, the 180 application controls how the color mapping is performed. 181 182 We define the expected processing pipeline below. For consistency 183 across devices, this is always the case with TRANSFORM_MATRIX. 184 185 When either FULL or HIGH_QUALITY is used, the camera device may 186 do additional processing but android.colorCorrection.gains and 187 android.colorCorrection.transform will still be provided by the 188 camera device (in the results) and be roughly correct. 189 190 Switching to TRANSFORM_MATRIX and using the data provided from 191 FAST or HIGH_QUALITY will yield a picture with the same white point 192 as what was produced by the camera device in the earlier frame. 193 194 The expected processing pipeline is as follows: 195 196  197 198 The white balance is encoded by two values, a 4-channel white-balance 199 gain vector (applied in the Bayer domain), and a 3x3 color transform 200 matrix (applied after demosaic). 201 202 The 4-channel white-balance gains are defined as: 203 204 android.colorCorrection.gains = [ R G_even G_odd B ] 205 206 where `G_even` is the gain for green pixels on even rows of the 207 output, and `G_odd` is the gain for green pixels on the odd rows. 208 These may be identical for a given camera device implementation; if 209 the camera device does not support a separate gain for even/odd green 210 channels, it will use the `G_even` value, and write `G_odd` equal to 211 `G_even` in the output result metadata. 212 213 The matrices for color transforms are defined as a 9-entry vector: 214 215 android.colorCorrection.transform = [ I0 I1 I2 I3 I4 I5 I6 I7 I8 ] 216 217 which define a transform from input sensor colors, `P_in = [ r g b ]`, 218 to output linear sRGB, `P_out = [ r' g' b' ]`, 219 220 with colors as follows: 221 222 r' = I0r + I1g + I2b 223 g' = I3r + I4g + I5b 224 b' = I6r + I7g + I8b 225 226 Both the input and output value ranges must match. Overflow/underflow 227 values are clipped to fit within the range. 228 </details> 229 <hal_details> 230 HAL must support both FAST and HIGH_QUALITY if color correction control is available 231 on the camera device, but the underlying implementation can be the same for both modes. 232 That is, if the highest quality implementation on the camera device does not slow down 233 capture rate, then FAST and HIGH_QUALITY should generate the same output. 234 </hal_details> 235 </entry> 236 <entry name="transform" type="rational" visibility="public" 237 type_notes="3x3 rational matrix in row-major order" 238 container="array" typedef="colorSpaceTransform" hwlevel="full"> 239 <array> 240 <size>3</size> 241 <size>3</size> 242 </array> 243 <description>A color transform matrix to use to transform 244 from sensor RGB color space to output linear sRGB color space. 245 </description> 246 <units>Unitless scale factors</units> 247 <details>This matrix is either set by the camera device when the request 248 android.colorCorrection.mode is not TRANSFORM_MATRIX, or 249 directly by the application in the request when the 250 android.colorCorrection.mode is TRANSFORM_MATRIX. 251 252 In the latter case, the camera device may round the matrix to account 253 for precision issues; the final rounded matrix should be reported back 254 in this matrix result metadata. The transform should keep the magnitude 255 of the output color values within `[0, 1.0]` (assuming input color 256 values is within the normalized range `[0, 1.0]`), or clipping may occur. 257 258 The valid range of each matrix element varies on different devices, but 259 values within [-1.5, 3.0] are guaranteed not to be clipped. 260 </details> 261 </entry> 262 <entry name="gains" type="float" visibility="public" 263 type_notes="A 1D array of floats for 4 color channel gains" 264 container="array" typedef="rggbChannelVector" hwlevel="full"> 265 <array> 266 <size>4</size> 267 </array> 268 <description>Gains applying to Bayer raw color channels for 269 white-balance.</description> 270 <units>Unitless gain factors</units> 271 <details> 272 These per-channel gains are either set by the camera device 273 when the request android.colorCorrection.mode is not 274 TRANSFORM_MATRIX, or directly by the application in the 275 request when the android.colorCorrection.mode is 276 TRANSFORM_MATRIX. 277 278 The gains in the result metadata are the gains actually 279 applied by the camera device to the current frame. 280 281 The valid range of gains varies on different devices, but gains 282 between [1.0, 3.0] are guaranteed not to be clipped. Even if a given 283 device allows gains below 1.0, this is usually not recommended because 284 this can create color artifacts. 285 </details> 286 <hal_details> 287 The 4-channel white-balance gains are defined in 288 the order of `[R G_even G_odd B]`, where `G_even` is the gain 289 for green pixels on even rows of the output, and `G_odd` 290 is the gain for green pixels on the odd rows. 291 292 If a HAL does not support a separate gain for even/odd green 293 channels, it must use the `G_even` value, and write 294 `G_odd` equal to `G_even` in the output result metadata. 295 </hal_details> 296 </entry> 297 <entry name="aberrationMode" type="byte" visibility="public" enum="true" hwlevel="legacy"> 298 <enum> 299 <value>OFF 300 <notes> 301 No aberration correction is applied. 302 </notes> 303 </value> 304 <value>FAST 305 <notes> 306 Aberration correction will not slow down capture rate 307 relative to sensor raw output. 308 </notes> 309 </value> 310 <value>HIGH_QUALITY 311 <notes> 312 Aberration correction operates at improved quality but the capture rate might be 313 reduced (relative to sensor raw output rate) 314 </notes> 315 </value> 316 </enum> 317 <description> 318 Mode of operation for the chromatic aberration correction algorithm. 319 </description> 320 <range>android.colorCorrection.availableAberrationModes</range> 321 <details> 322 Chromatic (color) aberration is caused by the fact that different wavelengths of light 323 can not focus on the same point after exiting from the lens. This metadata defines 324 the high level control of chromatic aberration correction algorithm, which aims to 325 minimize the chromatic artifacts that may occur along the object boundaries in an 326 image. 327 328 FAST/HIGH_QUALITY both mean that camera device determined aberration 329 correction will be applied. HIGH_QUALITY mode indicates that the camera device will 330 use the highest-quality aberration correction algorithms, even if it slows down 331 capture rate. FAST means the camera device will not slow down capture rate when 332 applying aberration correction. 333 334 LEGACY devices will always be in FAST mode. 335 </details> 336 </entry> 337 </controls> 338 <dynamic> 339 <clone entry="android.colorCorrection.mode" kind="controls"> 340 </clone> 341 <clone entry="android.colorCorrection.transform" kind="controls"> 342 </clone> 343 <clone entry="android.colorCorrection.gains" kind="controls"> 344 </clone> 345 <clone entry="android.colorCorrection.aberrationMode" kind="controls"> 346 </clone> 347 </dynamic> 348 <static> 349 <entry name="availableAberrationModes" type="byte" visibility="public" 350 type_notes="list of enums" container="array" typedef="enumList" hwlevel="legacy"> 351 <array> 352 <size>n</size> 353 </array> 354 <description> 355 List of aberration correction modes for android.colorCorrection.aberrationMode that are 356 supported by this camera device. 357 </description> 358 <range>Any value listed in android.colorCorrection.aberrationMode</range> 359 <details> 360 This key lists the valid modes for android.colorCorrection.aberrationMode. If no 361 aberration correction modes are available for a device, this list will solely include 362 OFF mode. All camera devices will support either OFF or FAST mode. 363 364 Camera devices that support the MANUAL_POST_PROCESSING capability will always list 365 OFF mode. This includes all FULL level devices. 366 367 LEGACY devices will always only support FAST mode. 368 </details> 369 <hal_details> 370 HAL must support both FAST and HIGH_QUALITY if chromatic aberration control is available 371 on the camera device, but the underlying implementation can be the same for both modes. 372 That is, if the highest quality implementation on the camera device does not slow down 373 capture rate, then FAST and HIGH_QUALITY will generate the same output. 374 </hal_details> 375 <tag id="V1" /> 376 </entry> 377 </static> 378 </section> 379 <section name="control"> 380 <controls> 381 <entry name="aeAntibandingMode" type="byte" visibility="public" 382 enum="true" hwlevel="legacy"> 383 <enum> 384 <value>OFF 385 <notes> 386 The camera device will not adjust exposure duration to 387 avoid banding problems. 388 </notes> 389 </value> 390 <value>50HZ 391 <notes> 392 The camera device will adjust exposure duration to 393 avoid banding problems with 50Hz illumination sources. 394 </notes> 395 </value> 396 <value>60HZ 397 <notes> 398 The camera device will adjust exposure duration to 399 avoid banding problems with 60Hz illumination 400 sources. 401 </notes> 402 </value> 403 <value>AUTO 404 <notes> 405 The camera device will automatically adapt its 406 antibanding routine to the current illumination 407 condition. This is the default mode if AUTO is 408 available on given camera device. 409 </notes> 410 </value> 411 </enum> 412 <description> 413 The desired setting for the camera device's auto-exposure 414 algorithm's antibanding compensation. 415 </description> 416 <range> 417 android.control.aeAvailableAntibandingModes 418 </range> 419 <details> 420 Some kinds of lighting fixtures, such as some fluorescent 421 lights, flicker at the rate of the power supply frequency 422 (60Hz or 50Hz, depending on country). While this is 423 typically not noticeable to a person, it can be visible to 424 a camera device. If a camera sets its exposure time to the 425 wrong value, the flicker may become visible in the 426 viewfinder as flicker or in a final captured image, as a 427 set of variable-brightness bands across the image. 428 429 Therefore, the auto-exposure routines of camera devices 430 include antibanding routines that ensure that the chosen 431 exposure value will not cause such banding. The choice of 432 exposure time depends on the rate of flicker, which the 433 camera device can detect automatically, or the expected 434 rate can be selected by the application using this 435 control. 436 437 A given camera device may not support all of the possible 438 options for the antibanding mode. The 439 android.control.aeAvailableAntibandingModes key contains 440 the available modes for a given camera device. 441 442 AUTO mode is the default if it is available on given 443 camera device. When AUTO mode is not available, the 444 default will be either 50HZ or 60HZ, and both 50HZ 445 and 60HZ will be available. 446 447 If manual exposure control is enabled (by setting 448 android.control.aeMode or android.control.mode to OFF), 449 then this setting has no effect, and the application must 450 ensure it selects exposure times that do not cause banding 451 issues. The android.statistics.sceneFlicker key can assist 452 the application in this. 453 </details> 454 <hal_details> 455 For all capture request templates, this field must be set 456 to AUTO if AUTO mode is available. If AUTO is not available, 457 the default must be either 50HZ or 60HZ, and both 50HZ and 458 60HZ must be available. 459 460 If manual exposure control is enabled (by setting 461 android.control.aeMode or android.control.mode to OFF), 462 then the exposure values provided by the application must not be 463 adjusted for antibanding. 464 </hal_details> 465 <tag id="BC" /> 466 </entry> 467 <entry name="aeExposureCompensation" type="int32" visibility="public" hwlevel="legacy"> 468 <description>Adjustment to auto-exposure (AE) target image 469 brightness.</description> 470 <units>Compensation steps</units> 471 <range>android.control.aeCompensationRange</range> 472 <details> 473 The adjustment is measured as a count of steps, with the 474 step size defined by android.control.aeCompensationStep and the 475 allowed range by android.control.aeCompensationRange. 476 477 For example, if the exposure value (EV) step is 0.333, '6' 478 will mean an exposure compensation of +2 EV; -3 will mean an 479 exposure compensation of -1 EV. One EV represents a doubling 480 of image brightness. Note that this control will only be 481 effective if android.control.aeMode `!=` OFF. This control 482 will take effect even when android.control.aeLock `== true`. 483 484 In the event of exposure compensation value being changed, camera device 485 may take several frames to reach the newly requested exposure target. 486 During that time, android.control.aeState field will be in the SEARCHING 487 state. Once the new exposure target is reached, android.control.aeState will 488 change from SEARCHING to either CONVERGED, LOCKED (if AE lock is enabled), or 489 FLASH_REQUIRED (if the scene is too dark for still capture). 490 </details> 491 <tag id="BC" /> 492 </entry> 493 <entry name="aeLock" type="byte" visibility="public" enum="true" 494 typedef="boolean" hwlevel="legacy"> 495 <enum> 496 <value>OFF 497 <notes>Auto-exposure lock is disabled; the AE algorithm 498 is free to update its parameters.</notes></value> 499 <value>ON 500 <notes>Auto-exposure lock is enabled; the AE algorithm 501 must not update the exposure and sensitivity parameters 502 while the lock is active. 503 504 android.control.aeExposureCompensation setting changes 505 will still take effect while auto-exposure is locked. 506 507 Some rare LEGACY devices may not support 508 this, in which case the value will always be overridden to OFF. 509 </notes></value> 510 </enum> 511 <description>Whether auto-exposure (AE) is currently locked to its latest 512 calculated values.</description> 513 <details> 514 When set to `true` (ON), the AE algorithm is locked to its latest parameters, 515 and will not change exposure settings until the lock is set to `false` (OFF). 516 517 Note that even when AE is locked, the flash may be fired if 518 the android.control.aeMode is ON_AUTO_FLASH / 519 ON_ALWAYS_FLASH / ON_AUTO_FLASH_REDEYE. 520 521 When android.control.aeExposureCompensation is changed, even if the AE lock 522 is ON, the camera device will still adjust its exposure value. 523 524 If AE precapture is triggered (see android.control.aePrecaptureTrigger) 525 when AE is already locked, the camera device will not change the exposure time 526 (android.sensor.exposureTime) and sensitivity (android.sensor.sensitivity) 527 parameters. The flash may be fired if the android.control.aeMode 528 is ON_AUTO_FLASH/ON_AUTO_FLASH_REDEYE and the scene is too dark. If the 529 android.control.aeMode is ON_ALWAYS_FLASH, the scene may become overexposed. 530 Similarly, AE precapture trigger CANCEL has no effect when AE is already locked. 531 532 When an AE precapture sequence is triggered, AE unlock will not be able to unlock 533 the AE if AE is locked by the camera device internally during precapture metering 534 sequence In other words, submitting requests with AE unlock has no effect for an 535 ongoing precapture metering sequence. Otherwise, the precapture metering sequence 536 will never succeed in a sequence of preview requests where AE lock is always set 537 to `false`. 538 539 Since the camera device has a pipeline of in-flight requests, the settings that 540 get locked do not necessarily correspond to the settings that were present in the 541 latest capture result received from the camera device, since additional captures 542 and AE updates may have occurred even before the result was sent out. If an 543 application is switching between automatic and manual control and wishes to eliminate 544 any flicker during the switch, the following procedure is recommended: 545 546 1. Starting in auto-AE mode: 547 2. Lock AE 548 3. Wait for the first result to be output that has the AE locked 549 4. Copy exposure settings from that result into a request, set the request to manual AE 550 5. Submit the capture request, proceed to run manual AE as desired. 551 552 See android.control.aeState for AE lock related state transition details. 553 </details> 554 <tag id="BC" /> 555 </entry> 556 <entry name="aeMode" type="byte" visibility="public" enum="true" hwlevel="legacy"> 557 <enum> 558 <value>OFF 559 <notes> 560 The camera device's autoexposure routine is disabled. 561 562 The application-selected android.sensor.exposureTime, 563 android.sensor.sensitivity and 564 android.sensor.frameDuration are used by the camera 565 device, along with android.flash.* fields, if there's 566 a flash unit for this camera device. 567 568 Note that auto-white balance (AWB) and auto-focus (AF) 569 behavior is device dependent when AE is in OFF mode. 570 To have consistent behavior across different devices, 571 it is recommended to either set AWB and AF to OFF mode 572 or lock AWB and AF before setting AE to OFF. 573 See android.control.awbMode, android.control.afMode, 574 android.control.awbLock, and android.control.afTrigger 575 for more details. 576 577 LEGACY devices do not support the OFF mode and will 578 override attempts to use this value to ON. 579 </notes> 580 </value> 581 <value>ON 582 <notes> 583 The camera device's autoexposure routine is active, 584 with no flash control. 585 586 The application's values for 587 android.sensor.exposureTime, 588 android.sensor.sensitivity, and 589 android.sensor.frameDuration are ignored. The 590 application has control over the various 591 android.flash.* fields. 592 </notes> 593 </value> 594 <value>ON_AUTO_FLASH 595 <notes> 596 Like ON, except that the camera device also controls 597 the camera's flash unit, firing it in low-light 598 conditions. 599 600 The flash may be fired during a precapture sequence 601 (triggered by android.control.aePrecaptureTrigger) and 602 may be fired for captures for which the 603 android.control.captureIntent field is set to 604 STILL_CAPTURE 605 </notes> 606 </value> 607 <value>ON_ALWAYS_FLASH 608 <notes> 609 Like ON, except that the camera device also controls 610 the camera's flash unit, always firing it for still 611 captures. 612 613 The flash may be fired during a precapture sequence 614 (triggered by android.control.aePrecaptureTrigger) and 615 will always be fired for captures for which the 616 android.control.captureIntent field is set to 617 STILL_CAPTURE 618 </notes> 619 </value> 620 <value>ON_AUTO_FLASH_REDEYE 621 <notes> 622 Like ON_AUTO_FLASH, but with automatic red eye 623 reduction. 624 625 If deemed necessary by the camera device, a red eye 626 reduction flash will fire during the precapture 627 sequence. 628 </notes> 629 </value> 630 </enum> 631 <description>The desired mode for the camera device's 632 auto-exposure routine.</description> 633 <range>android.control.aeAvailableModes</range> 634 <details> 635 This control is only effective if android.control.mode is 636 AUTO. 637 638 When set to any of the ON modes, the camera device's 639 auto-exposure routine is enabled, overriding the 640 application's selected exposure time, sensor sensitivity, 641 and frame duration (android.sensor.exposureTime, 642 android.sensor.sensitivity, and 643 android.sensor.frameDuration). If one of the FLASH modes 644 is selected, the camera device's flash unit controls are 645 also overridden. 646 647 The FLASH modes are only available if the camera device 648 has a flash unit (android.flash.info.available is `true`). 649 650 If flash TORCH mode is desired, this field must be set to 651 ON or OFF, and android.flash.mode set to TORCH. 652 653 When set to any of the ON modes, the values chosen by the 654 camera device auto-exposure routine for the overridden 655 fields for a given capture will be available in its 656 CaptureResult. 657 </details> 658 <tag id="BC" /> 659 </entry> 660 <entry name="aeRegions" type="int32" visibility="public" 661 optional="true" container="array" typedef="meteringRectangle"> 662 <array> 663 <size>5</size> 664 <size>area_count</size> 665 </array> 666 <description>List of metering areas to use for auto-exposure adjustment.</description> 667 <units>Pixel coordinates within android.sensor.info.activeArraySize</units> 668 <range>Coordinates must be between `[(0,0), (width, height))` of 669 android.sensor.info.activeArraySize</range> 670 <details> 671 Not available if android.control.maxRegionsAe is 0. 672 Otherwise will always be present. 673 674 The maximum number of regions supported by the device is determined by the value 675 of android.control.maxRegionsAe. 676 677 The data representation is int[5 * area_count]. 678 Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight). 679 The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and 680 ymax. 681 682 The coordinate system is based on the active pixel array, 683 with (0,0) being the top-left pixel in the active pixel array, and 684 (android.sensor.info.activeArraySize.width - 1, 685 android.sensor.info.activeArraySize.height - 1) being the 686 bottom-right pixel in the active pixel array. 687 688 The weight must be within `[0, 1000]`, and represents a weight 689 for every pixel in the area. This means that a large metering area 690 with the same weight as a smaller area will have more effect in 691 the metering result. Metering areas can partially overlap and the 692 camera device will add the weights in the overlap region. 693 694 The weights are relative to weights of other exposure metering regions, so if only one 695 region is used, all non-zero weights will have the same effect. A region with 0 696 weight is ignored. 697 698 If all regions have 0 weight, then no specific metering area needs to be used by the 699 camera device. 700 701 If the metering region is outside the used android.scaler.cropRegion returned in 702 capture result metadata, the camera device will ignore the sections outside the crop 703 region and output only the intersection rectangle as the metering region in the result 704 metadata. If the region is entirely outside the crop region, it will be ignored and 705 not reported in the result metadata. 706 </details> 707 <hal_details> 708 The HAL level representation of MeteringRectangle[] is a 709 int[5 * area_count]. 710 Every five elements represent a metering region of 711 (xmin, ymin, xmax, ymax, weight). 712 The rectangle is defined to be inclusive on xmin and ymin, but 713 exclusive on xmax and ymax. 714 </hal_details> 715 <tag id="BC" /> 716 </entry> 717 <entry name="aeTargetFpsRange" type="int32" visibility="public" 718 container="array" typedef="rangeInt" hwlevel="legacy"> 719 <array> 720 <size>2</size> 721 </array> 722 <description>Range over which the auto-exposure routine can 723 adjust the capture frame rate to maintain good 724 exposure.</description> 725 <units>Frames per second (FPS)</units> 726 <range>Any of the entries in android.control.aeAvailableTargetFpsRanges</range> 727 <details>Only constrains auto-exposure (AE) algorithm, not 728 manual control of android.sensor.exposureTime and 729 android.sensor.frameDuration.</details> 730 <tag id="BC" /> 731 </entry> 732 <entry name="aePrecaptureTrigger" type="byte" visibility="public" 733 enum="true" hwlevel="limited"> 734 <enum> 735 <value>IDLE 736 <notes>The trigger is idle.</notes> 737 </value> 738 <value>START 739 <notes>The precapture metering sequence will be started 740 by the camera device. 741 742 The exact effect of the precapture trigger depends on 743 the current AE mode and state.</notes> 744 </value> 745 <value>CANCEL 746 <notes>The camera device will cancel any currently active or completed 747 precapture metering sequence, the auto-exposure routine will return to its 748 initial state.</notes> 749 </value> 750 </enum> 751 <description>Whether the camera device will trigger a precapture 752 metering sequence when it processes this request.</description> 753 <details>This entry is normally set to IDLE, or is not 754 included at all in the request settings. When included and 755 set to START, the camera device will trigger the auto-exposure (AE) 756 precapture metering sequence. 757 758 When set to CANCEL, the camera device will cancel any active 759 precapture metering trigger, and return to its initial AE state. 760 If a precapture metering sequence is already completed, and the camera 761 device has implicitly locked the AE for subsequent still capture, the 762 CANCEL trigger will unlock the AE and return to its initial AE state. 763 764 The precapture sequence should be triggered before starting a 765 high-quality still capture for final metering decisions to 766 be made, and for firing pre-capture flash pulses to estimate 767 scene brightness and required final capture flash power, when 768 the flash is enabled. 769 770 Normally, this entry should be set to START for only a 771 single request, and the application should wait until the 772 sequence completes before starting a new one. 773 774 When a precapture metering sequence is finished, the camera device 775 may lock the auto-exposure routine internally to be able to accurately expose the 776 subsequent still capture image (`android.control.captureIntent == STILL_CAPTURE`). 777 For this case, the AE may not resume normal scan if no subsequent still capture is 778 submitted. To ensure that the AE routine restarts normal scan, the application should 779 submit a request with `android.control.aeLock == true`, followed by a request 780 with `android.control.aeLock == false`, if the application decides not to submit a 781 still capture request after the precapture sequence completes. Alternatively, for 782 API level 23 or newer devices, the CANCEL can be used to unlock the camera device 783 internally locked AE if the application doesn't submit a still capture request after 784 the AE precapture trigger. Note that, the CANCEL was added in API level 23, and must not 785 be used in devices that have earlier API levels. 786 787 The exact effect of auto-exposure (AE) precapture trigger 788 depends on the current AE mode and state; see 789 android.control.aeState for AE precapture state transition 790 details. 791 792 On LEGACY-level devices, the precapture trigger is not supported; 793 capturing a high-resolution JPEG image will automatically trigger a 794 precapture sequence before the high-resolution capture, including 795 potentially firing a pre-capture flash. 796 797 Using the precapture trigger and the auto-focus trigger android.control.afTrigger 798 simultaneously is allowed. However, since these triggers often require cooperation between 799 the auto-focus and auto-exposure routines (for example, the may need to be enabled for a 800 focus sweep), the camera device may delay acting on a later trigger until the previous 801 trigger has been fully handled. This may lead to longer intervals between the trigger and 802 changes to android.control.aeState indicating the start of the precapture sequence, for 803 example. 804 805 If both the precapture and the auto-focus trigger are activated on the same request, then 806 the camera device will complete them in the optimal order for that device. 807 </details> 808 <hal_details> 809 The HAL must support triggering the AE precapture trigger while an AF trigger is active 810 (and vice versa), or at the same time as the AF trigger. It is acceptable for the HAL to 811 treat these as two consecutive triggers, for example handling the AF trigger and then the 812 AE trigger. Or the HAL may choose to optimize the case with both triggers fired at once, 813 to minimize the latency for converging both focus and exposure/flash usage. 814 </hal_details> 815 <tag id="BC" /> 816 </entry> 817 <entry name="afMode" type="byte" visibility="public" enum="true" 818 hwlevel="legacy"> 819 <enum> 820 <value>OFF 821 <notes>The auto-focus routine does not control the lens; 822 android.lens.focusDistance is controlled by the 823 application.</notes></value> 824 <value>AUTO 825 <notes>Basic automatic focus mode. 826 827 In this mode, the lens does not move unless 828 the autofocus trigger action is called. When that trigger 829 is activated, AF will transition to ACTIVE_SCAN, then to 830 the outcome of the scan (FOCUSED or NOT_FOCUSED). 831 832 Always supported if lens is not fixed focus. 833 834 Use android.lens.info.minimumFocusDistance to determine if lens 835 is fixed-focus. 836 837 Triggering AF_CANCEL resets the lens position to default, 838 and sets the AF state to INACTIVE.</notes></value> 839 <value>MACRO 840 <notes>Close-up focusing mode. 841 842 In this mode, the lens does not move unless the 843 autofocus trigger action is called. When that trigger is 844 activated, AF will transition to ACTIVE_SCAN, then to 845 the outcome of the scan (FOCUSED or NOT_FOCUSED). This 846 mode is optimized for focusing on objects very close to 847 the camera. 848 849 When that trigger is activated, AF will transition to 850 ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or 851 NOT_FOCUSED). Triggering cancel AF resets the lens 852 position to default, and sets the AF state to 853 INACTIVE.</notes></value> 854 <value>CONTINUOUS_VIDEO 855 <notes>In this mode, the AF algorithm modifies the lens 856 position continually to attempt to provide a 857 constantly-in-focus image stream. 858 859 The focusing behavior should be suitable for good quality 860 video recording; typically this means slower focus 861 movement and no overshoots. When the AF trigger is not 862 involved, the AF algorithm should start in INACTIVE state, 863 and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED 864 states as appropriate. When the AF trigger is activated, 865 the algorithm should immediately transition into 866 AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the 867 lens position until a cancel AF trigger is received. 868 869 Once cancel is received, the algorithm should transition 870 back to INACTIVE and resume passive scan. Note that this 871 behavior is not identical to CONTINUOUS_PICTURE, since an 872 ongoing PASSIVE_SCAN must immediately be 873 canceled.</notes></value> 874 <value>CONTINUOUS_PICTURE 875 <notes>In this mode, the AF algorithm modifies the lens 876 position continually to attempt to provide a 877 constantly-in-focus image stream. 878 879 The focusing behavior should be suitable for still image 880 capture; typically this means focusing as fast as 881 possible. When the AF trigger is not involved, the AF 882 algorithm should start in INACTIVE state, and then 883 transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as 884 appropriate as it attempts to maintain focus. When the AF 885 trigger is activated, the algorithm should finish its 886 PASSIVE_SCAN if active, and then transition into 887 AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the 888 lens position until a cancel AF trigger is received. 889 890 When the AF cancel trigger is activated, the algorithm 891 should transition back to INACTIVE and then act as if it 892 has just been started.</notes></value> 893 <value>EDOF 894 <notes>Extended depth of field (digital focus) mode. 895 896 The camera device will produce images with an extended 897 depth of field automatically; no special focusing 898 operations need to be done before taking a picture. 899 900 AF triggers are ignored, and the AF state will always be 901 INACTIVE.</notes></value> 902 </enum> 903 <description>Whether auto-focus (AF) is currently enabled, and what 904 mode it is set to.</description> 905 <range>android.control.afAvailableModes</range> 906 <details>Only effective if android.control.mode = AUTO and the lens is not fixed focus 907 (i.e. `android.lens.info.minimumFocusDistance > 0`). Also note that 908 when android.control.aeMode is OFF, the behavior of AF is device 909 dependent. It is recommended to lock AF by using android.control.afTrigger before 910 setting android.control.aeMode to OFF, or set AF mode to OFF when AE is OFF. 911 912 If the lens is controlled by the camera device auto-focus algorithm, 913 the camera device will report the current AF status in android.control.afState 914 in result metadata.</details> 915 <hal_details> 916 When afMode is AUTO or MACRO, the lens must not move until an AF trigger is sent in a 917 request (android.control.afTrigger `==` START). After an AF trigger, the afState will end 918 up with either FOCUSED_LOCKED or NOT_FOCUSED_LOCKED state (see 919 android.control.afState for detailed state transitions), which indicates that the lens is 920 locked and will not move. If camera movement (e.g. tilting camera) causes the lens to move 921 after the lens is locked, the HAL must compensate this movement appropriately such that 922 the same focal plane remains in focus. 923 924 When afMode is one of the continuous auto focus modes, the HAL is free to start a AF 925 scan whenever it's not locked. When the lens is locked after an AF trigger 926 (see android.control.afState for detailed state transitions), the HAL should maintain the 927 same lock behavior as above. 928 929 When afMode is OFF, the application controls focus manually. The accuracy of the 930 focus distance control depends on the android.lens.info.focusDistanceCalibration. 931 However, the lens must not move regardless of the camera movement for any focus distance 932 manual control. 933 934 To put this in concrete terms, if the camera has lens elements which may move based on 935 camera orientation or motion (e.g. due to gravity), then the HAL must drive the lens to 936 remain in a fixed position invariant to the camera's orientation or motion, for example, 937 by using accelerometer measurements in the lens control logic. This is a typical issue 938 that will arise on camera modules with open-loop VCMs. 939 </hal_details> 940 <tag id="BC" /> 941 </entry> 942 <entry name="afRegions" type="int32" visibility="public" 943 optional="true" container="array" typedef="meteringRectangle"> 944 <array> 945 <size>5</size> 946 <size>area_count</size> 947 </array> 948 <description>List of metering areas to use for auto-focus.</description> 949 <units>Pixel coordinates within android.sensor.info.activeArraySize</units> 950 <range>Coordinates must be between `[(0,0), (width, height))` of 951 android.sensor.info.activeArraySize</range> 952 <details> 953 Not available if android.control.maxRegionsAf is 0. 954 Otherwise will always be present. 955 956 The maximum number of focus areas supported by the device is determined by the value 957 of android.control.maxRegionsAf. 958 959 The data representation is int[5 * area_count]. 960 Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight). 961 The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and 962 ymax. 963 964 The coordinate system is based on the active pixel array, 965 with (0,0) being the top-left pixel in the active pixel array, and 966 (android.sensor.info.activeArraySize.width - 1, 967 android.sensor.info.activeArraySize.height - 1) being the 968 bottom-right pixel in the active pixel array. 969 970 The weight must be within `[0, 1000]`, and represents a weight 971 for every pixel in the area. This means that a large metering area 972 with the same weight as a smaller area will have more effect in 973 the metering result. Metering areas can partially overlap and the 974 camera device will add the weights in the overlap region. 975 976 The weights are relative to weights of other metering regions, so if only one region 977 is used, all non-zero weights will have the same effect. A region with 0 weight is 978 ignored. 979 980 If all regions have 0 weight, then no specific metering area needs to be used by the 981 camera device. 982 983 If the metering region is outside the used android.scaler.cropRegion returned in 984 capture result metadata, the camera device will ignore the sections outside the crop 985 region and output only the intersection rectangle as the metering region in the result 986 metadata. If the region is entirely outside the crop region, it will be ignored and 987 not reported in the result metadata. 988 </details> 989 <hal_details> 990 The HAL level representation of MeteringRectangle[] is a 991 int[5 * area_count]. 992 Every five elements represent a metering region of 993 (xmin, ymin, xmax, ymax, weight). 994 The rectangle is defined to be inclusive on xmin and ymin, but 995 exclusive on xmax and ymax. 996 </hal_details> 997 <tag id="BC" /> 998 </entry> 999 <entry name="afTrigger" type="byte" visibility="public" enum="true" 1000 hwlevel="legacy"> 1001 <enum> 1002 <value>IDLE 1003 <notes>The trigger is idle.</notes> 1004 </value> 1005 <value>START 1006 <notes>Autofocus will trigger now.</notes> 1007 </value> 1008 <value>CANCEL 1009 <notes>Autofocus will return to its initial 1010 state, and cancel any currently active trigger.</notes> 1011 </value> 1012 </enum> 1013 <description> 1014 Whether the camera device will trigger autofocus for this request. 1015 </description> 1016 <details>This entry is normally set to IDLE, or is not 1017 included at all in the request settings. 1018 1019 When included and set to START, the camera device will trigger the 1020 autofocus algorithm. If autofocus is disabled, this trigger has no effect. 1021 1022 When set to CANCEL, the camera device will cancel any active trigger, 1023 and return to its initial AF state. 1024 1025 Generally, applications should set this entry to START or CANCEL for only a 1026 single capture, and then return it to IDLE (or not set at all). Specifying 1027 START for multiple captures in a row means restarting the AF operation over 1028 and over again. 1029 1030 See android.control.afState for what the trigger means for each AF mode. 1031 1032 Using the autofocus trigger and the precapture trigger android.control.aePrecaptureTrigger 1033 simultaneously is allowed. However, since these triggers often require cooperation between 1034 the auto-focus and auto-exposure routines (for example, the may need to be enabled for a 1035 focus sweep), the camera device may delay acting on a later trigger until the previous 1036 trigger has been fully handled. This may lead to longer intervals between the trigger and 1037 changes to android.control.afState, for example. 1038 </details> 1039 <hal_details> 1040 The HAL must support triggering the AF trigger while an AE precapture trigger is active 1041 (and vice versa), or at the same time as the AE trigger. It is acceptable for the HAL to 1042 treat these as two consecutive triggers, for example handling the AF trigger and then the 1043 AE trigger. Or the HAL may choose to optimize the case with both triggers fired at once, 1044 to minimize the latency for converging both focus and exposure/flash usage. 1045 </hal_details> 1046 <tag id="BC" /> 1047 </entry> 1048 <entry name="awbLock" type="byte" visibility="public" enum="true" 1049 typedef="boolean" hwlevel="legacy"> 1050 <enum> 1051 <value>OFF 1052 <notes>Auto-white balance lock is disabled; the AWB 1053 algorithm is free to update its parameters if in AUTO 1054 mode.</notes></value> 1055 <value>ON 1056 <notes>Auto-white balance lock is enabled; the AWB 1057 algorithm will not update its parameters while the lock 1058 is active.</notes></value> 1059 </enum> 1060 <description>Whether auto-white balance (AWB) is currently locked to its 1061 latest calculated values.</description> 1062 <details> 1063 When set to `true` (ON), the AWB algorithm is locked to its latest parameters, 1064 and will not change color balance settings until the lock is set to `false` (OFF). 1065 1066 Since the camera device has a pipeline of in-flight requests, the settings that 1067 get locked do not necessarily correspond to the settings that were present in the 1068 latest capture result received from the camera device, since additional captures 1069 and AWB updates may have occurred even before the result was sent out. If an 1070 application is switching between automatic and manual control and wishes to eliminate 1071 any flicker during the switch, the following procedure is recommended: 1072 1073 1. Starting in auto-AWB mode: 1074 2. Lock AWB 1075 3. Wait for the first result to be output that has the AWB locked 1076 4. Copy AWB settings from that result into a request, set the request to manual AWB 1077 5. Submit the capture request, proceed to run manual AWB as desired. 1078 1079 Note that AWB lock is only meaningful when 1080 android.control.awbMode is in the AUTO mode; in other modes, 1081 AWB is already fixed to a specific setting. 1082 1083 Some LEGACY devices may not support ON; the value is then overridden to OFF. 1084 </details> 1085 <tag id="BC" /> 1086 </entry> 1087 <entry name="awbMode" type="byte" visibility="public" enum="true" 1088 hwlevel="legacy"> 1089 <enum> 1090 <value>OFF 1091 <notes> 1092 The camera device's auto-white balance routine is disabled. 1093 1094 The application-selected color transform matrix 1095 (android.colorCorrection.transform) and gains 1096 (android.colorCorrection.gains) are used by the camera 1097 device for manual white balance control. 1098 </notes> 1099 </value> 1100 <value>AUTO 1101 <notes> 1102 The camera device's auto-white balance routine is active. 1103 1104 The application's values for android.colorCorrection.transform 1105 and android.colorCorrection.gains are ignored. 1106 For devices that support the MANUAL_POST_PROCESSING capability, the 1107 values used by the camera device for the transform and gains 1108 will be available in the capture result for this request. 1109 </notes> 1110 </value> 1111 <value>INCANDESCENT 1112 <notes> 1113 The camera device's auto-white balance routine is disabled; 1114 the camera device uses incandescent light as the assumed scene 1115 illumination for white balance. 1116 1117 While the exact white balance transforms are up to the 1118 camera device, they will approximately match the CIE 1119 standard illuminant A. 1120 1121 The application's values for android.colorCorrection.transform 1122 and android.colorCorrection.gains are ignored. 1123 For devices that support the MANUAL_POST_PROCESSING capability, the 1124 values used by the camera device for the transform and gains 1125 will be available in the capture result for this request. 1126 </notes> 1127 </value> 1128 <value>FLUORESCENT 1129 <notes> 1130 The camera device's auto-white balance routine is disabled; 1131 the camera device uses fluorescent light as the assumed scene 1132 illumination for white balance. 1133 1134 While the exact white balance transforms are up to the 1135 camera device, they will approximately match the CIE 1136 standard illuminant F2. 1137 1138 The application's values for android.colorCorrection.transform 1139 and android.colorCorrection.gains are ignored. 1140 For devices that support the MANUAL_POST_PROCESSING capability, the 1141 values used by the camera device for the transform and gains 1142 will be available in the capture result for this request. 1143 </notes> 1144 </value> 1145 <value>WARM_FLUORESCENT 1146 <notes> 1147 The camera device's auto-white balance routine is disabled; 1148 the camera device uses warm fluorescent light as the assumed scene 1149 illumination for white balance. 1150 1151 While the exact white balance transforms are up to the 1152 camera device, they will approximately match the CIE 1153 standard illuminant F4. 1154 1155 The application's values for android.colorCorrection.transform 1156 and android.colorCorrection.gains are ignored. 1157 For devices that support the MANUAL_POST_PROCESSING capability, the 1158 values used by the camera device for the transform and gains 1159 will be available in the capture result for this request. 1160 </notes> 1161 </value> 1162 <value>DAYLIGHT 1163 <notes> 1164 The camera device's auto-white balance routine is disabled; 1165 the camera device uses daylight light as the assumed scene 1166 illumination for white balance. 1167 1168 While the exact white balance transforms are up to the 1169 camera device, they will approximately match the CIE 1170 standard illuminant D65. 1171 1172 The application's values for android.colorCorrection.transform 1173 and android.colorCorrection.gains are ignored. 1174 For devices that support the MANUAL_POST_PROCESSING capability, the 1175 values used by the camera device for the transform and gains 1176 will be available in the capture result for this request. 1177 </notes> 1178 </value> 1179 <value>CLOUDY_DAYLIGHT 1180 <notes> 1181 The camera device's auto-white balance routine is disabled; 1182 the camera device uses cloudy daylight light as the assumed scene 1183 illumination for white balance. 1184 1185 The application's values for android.colorCorrection.transform 1186 and android.colorCorrection.gains are ignored. 1187 For devices that support the MANUAL_POST_PROCESSING capability, the 1188 values used by the camera device for the transform and gains 1189 will be available in the capture result for this request. 1190 </notes> 1191 </value> 1192 <value>TWILIGHT 1193 <notes> 1194 The camera device's auto-white balance routine is disabled; 1195 the camera device uses twilight light as the assumed scene 1196 illumination for white balance. 1197 1198 The application's values for android.colorCorrection.transform 1199 and android.colorCorrection.gains are ignored. 1200 For devices that support the MANUAL_POST_PROCESSING capability, the 1201 values used by the camera device for the transform and gains 1202 will be available in the capture result for this request. 1203 </notes> 1204 </value> 1205 <value>SHADE 1206 <notes> 1207 The camera device's auto-white balance routine is disabled; 1208 the camera device uses shade light as the assumed scene 1209 illumination for white balance. 1210 1211 The application's values for android.colorCorrection.transform 1212 and android.colorCorrection.gains are ignored. 1213 For devices that support the MANUAL_POST_PROCESSING capability, the 1214 values used by the camera device for the transform and gains 1215 will be available in the capture result for this request. 1216 </notes> 1217 </value> 1218 </enum> 1219 <description>Whether auto-white balance (AWB) is currently setting the color 1220 transform fields, and what its illumination target 1221 is.</description> 1222 <range>android.control.awbAvailableModes</range> 1223 <details> 1224 This control is only effective if android.control.mode is AUTO. 1225 1226 When set to the ON mode, the camera device's auto-white balance 1227 routine is enabled, overriding the application's selected 1228 android.colorCorrection.transform, android.colorCorrection.gains and 1229 android.colorCorrection.mode. Note that when android.control.aeMode 1230 is OFF, the behavior of AWB is device dependent. It is recommened to 1231 also set AWB mode to OFF or lock AWB by using android.control.awbLock before 1232 setting AE mode to OFF. 1233 1234 When set to the OFF mode, the camera device's auto-white balance 1235 routine is disabled. The application manually controls the white 1236 balance by android.colorCorrection.transform, android.colorCorrection.gains 1237 and android.colorCorrection.mode. 1238 1239 When set to any other modes, the camera device's auto-white 1240 balance routine is disabled. The camera device uses each 1241 particular illumination target for white balance 1242 adjustment. The application's values for 1243 android.colorCorrection.transform, 1244 android.colorCorrection.gains and 1245 android.colorCorrection.mode are ignored. 1246 </details> 1247 <tag id="BC" /> 1248 </entry> 1249 <entry name="awbRegions" type="int32" visibility="public" 1250 optional="true" container="array" typedef="meteringRectangle"> 1251 <array> 1252 <size>5</size> 1253 <size>area_count</size> 1254 </array> 1255 <description>List of metering areas to use for auto-white-balance illuminant 1256 estimation.</description> 1257 <units>Pixel coordinates within android.sensor.info.activeArraySize</units> 1258 <range>Coordinates must be between `[(0,0), (width, height))` of 1259 android.sensor.info.activeArraySize</range> 1260 <details> 1261 Not available if android.control.maxRegionsAwb is 0. 1262 Otherwise will always be present. 1263 1264 The maximum number of regions supported by the device is determined by the value 1265 of android.control.maxRegionsAwb. 1266 1267 The data representation is int[5 * area_count]. 1268 Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight). 1269 The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and 1270 ymax. 1271 1272 The coordinate system is based on the active pixel array, 1273 with (0,0) being the top-left pixel in the active pixel array, and 1274 (android.sensor.info.activeArraySize.width - 1, 1275 android.sensor.info.activeArraySize.height - 1) being the 1276 bottom-right pixel in the active pixel array. 1277 1278 The weight must range from 0 to 1000, and represents a weight 1279 for every pixel in the area. This means that a large metering area 1280 with the same weight as a smaller area will have more effect in 1281 the metering result. Metering areas can partially overlap and the 1282 camera device will add the weights in the overlap region. 1283 1284 The weights are relative to weights of other white balance metering regions, so if 1285 only one region is used, all non-zero weights will have the same effect. A region with 1286 0 weight is ignored. 1287 1288 If all regions have 0 weight, then no specific metering area needs to be used by the 1289 camera device. 1290 1291 If the metering region is outside the used android.scaler.cropRegion returned in 1292 capture result metadata, the camera device will ignore the sections outside the crop 1293 region and output only the intersection rectangle as the metering region in the result 1294 metadata. If the region is entirely outside the crop region, it will be ignored and 1295 not reported in the result metadata. 1296 </details> 1297 <hal_details> 1298 The HAL level representation of MeteringRectangle[] is a 1299 int[5 * area_count]. 1300 Every five elements represent a metering region of 1301 (xmin, ymin, xmax, ymax, weight). 1302 The rectangle is defined to be inclusive on xmin and ymin, but 1303 exclusive on xmax and ymax. 1304 </hal_details> 1305 <tag id="BC" /> 1306 </entry> 1307 <entry name="captureIntent" type="byte" visibility="public" enum="true" 1308 hwlevel="legacy"> 1309 <enum> 1310 <value>CUSTOM 1311 <notes>The goal of this request doesn't fall into the other 1312 categories. The camera device will default to preview-like 1313 behavior.</notes></value> 1314 <value>PREVIEW 1315 <notes>This request is for a preview-like use case. 1316 1317 The precapture trigger may be used to start off a metering 1318 w/flash sequence. 1319 </notes></value> 1320 <value>STILL_CAPTURE 1321 <notes>This request is for a still capture-type 1322 use case. 1323 1324 If the flash unit is under automatic control, it may fire as needed. 1325 </notes></value> 1326 <value>VIDEO_RECORD 1327 <notes>This request is for a video recording 1328 use case.</notes></value> 1329 <value>VIDEO_SNAPSHOT 1330 <notes>This request is for a video snapshot (still 1331 image while recording video) use case. 1332 1333 The camera device should take the highest-quality image 1334 possible (given the other settings) without disrupting the 1335 frame rate of video recording. </notes></value> 1336 <value>ZERO_SHUTTER_LAG 1337 <notes>This request is for a ZSL usecase; the 1338 application will stream full-resolution images and 1339 reprocess one or several later for a final 1340 capture. 1341 </notes></value> 1342 <value>MANUAL 1343 <notes>This request is for manual capture use case where 1344 the applications want to directly control the capture parameters. 1345 1346 For example, the application may wish to manually control 1347 android.sensor.exposureTime, android.sensor.sensitivity, etc. 1348 </notes></value> 1349 </enum> 1350 <description>Information to the camera device 3A (auto-exposure, 1351 auto-focus, auto-white balance) routines about the purpose 1352 of this capture, to help the camera device to decide optimal 3A 1353 strategy.</description> 1354 <details>This control (except for MANUAL) is only effective if 1355 `android.control.mode != OFF` and any 3A routine is active. 1356 1357 ZERO_SHUTTER_LAG will be supported if android.request.availableCapabilities 1358 contains PRIVATE_REPROCESSING or YUV_REPROCESSING. MANUAL will be supported if 1359 android.request.availableCapabilities contains MANUAL_SENSOR. Other intent values are 1360 always supported. 1361 </details> 1362 <tag id="BC" /> 1363 </entry> 1364 <entry name="effectMode" type="byte" visibility="public" enum="true" 1365 hwlevel="legacy"> 1366 <enum> 1367 <value>OFF 1368 <notes> 1369 No color effect will be applied. 1370 </notes> 1371 </value> 1372 <value optional="true">MONO 1373 <notes> 1374 A "monocolor" effect where the image is mapped into 1375 a single color. 1376 1377 This will typically be grayscale. 1378 </notes> 1379 </value> 1380 <value optional="true">NEGATIVE 1381 <notes> 1382 A "photo-negative" effect where the image's colors 1383 are inverted. 1384 </notes> 1385 </value> 1386 <value optional="true">SOLARIZE 1387 <notes> 1388 A "solarisation" effect (Sabattier effect) where the 1389 image is wholly or partially reversed in 1390 tone. 1391 </notes> 1392 </value> 1393 <value optional="true">SEPIA 1394 <notes> 1395 A "sepia" effect where the image is mapped into warm 1396 gray, red, and brown tones. 1397 </notes> 1398 </value> 1399 <value optional="true">POSTERIZE 1400 <notes> 1401 A "posterization" effect where the image uses 1402 discrete regions of tone rather than a continuous 1403 gradient of tones. 1404 </notes> 1405 </value> 1406 <value optional="true">WHITEBOARD 1407 <notes> 1408 A "whiteboard" effect where the image is typically displayed 1409 as regions of white, with black or grey details. 1410 </notes> 1411 </value> 1412 <value optional="true">BLACKBOARD 1413 <notes> 1414 A "blackboard" effect where the image is typically displayed 1415 as regions of black, with white or grey details. 1416 </notes> 1417 </value> 1418 <value optional="true">AQUA 1419 <notes> 1420 An "aqua" effect where a blue hue is added to the image. 1421 </notes> 1422 </value> 1423 </enum> 1424 <description>A special color effect to apply.</description> 1425 <range>android.control.availableEffects</range> 1426 <details> 1427 When this mode is set, a color effect will be applied 1428 to images produced by the camera device. The interpretation 1429 and implementation of these color effects is left to the 1430 implementor of the camera device, and should not be 1431 depended on to be consistent (or present) across all 1432 devices. 1433 </details> 1434 <tag id="BC" /> 1435 </entry> 1436 <entry name="mode" type="byte" visibility="public" enum="true" 1437 hwlevel="legacy"> 1438 <enum> 1439 <value>OFF 1440 <notes>Full application control of pipeline. 1441 1442 All control by the device's metering and focusing (3A) 1443 routines is disabled, and no other settings in 1444 android.control.* have any effect, except that 1445 android.control.captureIntent may be used by the camera 1446 device to select post-processing values for processing 1447 blocks that do not allow for manual control, or are not 1448 exposed by the camera API. 1449 1450 However, the camera device's 3A routines may continue to 1451 collect statistics and update their internal state so that 1452 when control is switched to AUTO mode, good control values 1453 can be immediately applied. 1454 </notes></value> 1455 <value>AUTO 1456 <notes>Use settings for each individual 3A routine. 1457 1458 Manual control of capture parameters is disabled. All 1459 controls in android.control.* besides sceneMode take 1460 effect.</notes></value> 1461 <value optional="true">USE_SCENE_MODE 1462 <notes>Use a specific scene mode. 1463 1464 Enabling this disables control.aeMode, control.awbMode and 1465 control.afMode controls; the camera device will ignore 1466 those settings while USE_SCENE_MODE is active (except for 1467 FACE_PRIORITY scene mode). Other control entries are still active. 1468 This setting can only be used if scene mode is supported (i.e. 1469 android.control.availableSceneModes 1470 contain some modes other than DISABLED).</notes></value> 1471 <value optional="true">OFF_KEEP_STATE 1472 <notes>Same as OFF mode, except that this capture will not be 1473 used by camera device background auto-exposure, auto-white balance and 1474 auto-focus algorithms (3A) to update their statistics. 1475 1476 Specifically, the 3A routines are locked to the last 1477 values set from a request with AUTO, OFF, or 1478 USE_SCENE_MODE, and any statistics or state updates 1479 collected from manual captures with OFF_KEEP_STATE will be 1480 discarded by the camera device. 1481 </notes></value> 1482 </enum> 1483 <description>Overall mode of 3A (auto-exposure, auto-white-balance, auto-focus) control 1484 routines.</description> 1485 <range>android.control.availableModes</range> 1486 <details> 1487 This is a top-level 3A control switch. When set to OFF, all 3A control 1488 by the camera device is disabled. The application must set the fields for 1489 capture parameters itself. 1490 1491 When set to AUTO, the individual algorithm controls in 1492 android.control.* are in effect, such as android.control.afMode. 1493 1494 When set to USE_SCENE_MODE, the individual controls in 1495 android.control.* are mostly disabled, and the camera device implements 1496 one of the scene mode settings (such as ACTION, SUNSET, or PARTY) 1497 as it wishes. The camera device scene mode 3A settings are provided by 1498 capture results {@link ACameraMetadata} from 1499 {@link ACameraCaptureSession_captureCallback_result}. 1500 1501 When set to OFF_KEEP_STATE, it is similar to OFF mode, the only difference 1502 is that this frame will not be used by camera device background 3A statistics 1503 update, as if this frame is never captured. This mode can be used in the scenario 1504 where the application doesn't want a 3A manual control capture to affect 1505 the subsequent auto 3A capture results. 1506 </details> 1507 <tag id="BC" /> 1508 </entry> 1509 <entry name="sceneMode" type="byte" visibility="public" enum="true" 1510 hwlevel="legacy"> 1511 <enum> 1512 <value id="0">DISABLED 1513 <notes> 1514 Indicates that no scene modes are set for a given capture request. 1515 </notes> 1516 </value> 1517 <value>FACE_PRIORITY 1518 <notes>If face detection support exists, use face 1519 detection data for auto-focus, auto-white balance, and 1520 auto-exposure routines. 1521 1522 If face detection statistics are disabled 1523 (i.e. android.statistics.faceDetectMode is set to OFF), 1524 this should still operate correctly (but will not return 1525 face detection statistics to the framework). 1526 1527 Unlike the other scene modes, android.control.aeMode, 1528 android.control.awbMode, and android.control.afMode 1529 remain active when FACE_PRIORITY is set. 1530 </notes> 1531 </value> 1532 <value optional="true">ACTION 1533 <notes> 1534 Optimized for photos of quickly moving objects. 1535 1536 Similar to SPORTS. 1537 </notes> 1538 </value> 1539 <value optional="true">PORTRAIT 1540 <notes> 1541 Optimized for still photos of people. 1542 </notes> 1543 </value> 1544 <value optional="true">LANDSCAPE 1545 <notes> 1546 Optimized for photos of distant macroscopic objects. 1547 </notes> 1548 </value> 1549 <value optional="true">NIGHT 1550 <notes> 1551 Optimized for low-light settings. 1552 </notes> 1553 </value> 1554 <value optional="true">NIGHT_PORTRAIT 1555 <notes> 1556 Optimized for still photos of people in low-light 1557 settings. 1558 </notes> 1559 </value> 1560 <value optional="true">THEATRE 1561 <notes> 1562 Optimized for dim, indoor settings where flash must 1563 remain off. 1564 </notes> 1565 </value> 1566 <value optional="true">BEACH 1567 <notes> 1568 Optimized for bright, outdoor beach settings. 1569 </notes> 1570 </value> 1571 <value optional="true">SNOW 1572 <notes> 1573 Optimized for bright, outdoor settings containing snow. 1574 </notes> 1575 </value> 1576 <value optional="true">SUNSET 1577 <notes> 1578 Optimized for scenes of the setting sun. 1579 </notes> 1580 </value> 1581 <value optional="true">STEADYPHOTO 1582 <notes> 1583 Optimized to avoid blurry photos due to small amounts of 1584 device motion (for example: due to hand shake). 1585 </notes> 1586 </value> 1587 <value optional="true">FIREWORKS 1588 <notes> 1589 Optimized for nighttime photos of fireworks. 1590 </notes> 1591 </value> 1592 <value optional="true">SPORTS 1593 <notes> 1594 Optimized for photos of quickly moving people. 1595 1596 Similar to ACTION. 1597 </notes> 1598 </value> 1599 <value optional="true">PARTY 1600 <notes> 1601 Optimized for dim, indoor settings with multiple moving 1602 people. 1603 </notes> 1604 </value> 1605 <value optional="true">CANDLELIGHT 1606 <notes> 1607 Optimized for dim settings where the main light source 1608 is a flame. 1609 </notes> 1610 </value> 1611 <value optional="true">BARCODE 1612 <notes> 1613 Optimized for accurately capturing a photo of barcode 1614 for use by camera applications that wish to read the 1615 barcode value. 1616 </notes> 1617 </value> 1618 <value deprecated="true" optional="true" ndk_hidden="true">HIGH_SPEED_VIDEO 1619 <notes> 1620 This is deprecated, please use {@link 1621 android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession} 1622 and {@link 1623 android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList} 1624 for high speed video recording. 1625 1626 Optimized for high speed video recording (frame rate >=60fps) use case. 1627 1628 The supported high speed video sizes and fps ranges are specified in 1629 android.control.availableHighSpeedVideoConfigurations. To get desired 1630 output frame rates, the application is only allowed to select video size 1631 and fps range combinations listed in this static metadata. The fps range 1632 can be control via android.control.aeTargetFpsRange. 1633 1634 In this mode, the camera device will override aeMode, awbMode, and afMode to 1635 ON, ON, and CONTINUOUS_VIDEO, respectively. All post-processing block mode 1636 controls will be overridden to be FAST. Therefore, no manual control of capture 1637 and post-processing parameters is possible. All other controls operate the 1638 same as when android.control.mode == AUTO. This means that all other 1639 android.control.* fields continue to work, such as 1640 1641 * android.control.aeTargetFpsRange 1642 * android.control.aeExposureCompensation 1643 * android.control.aeLock 1644 * android.control.awbLock 1645 * android.control.effectMode 1646 * android.control.aeRegions 1647 * android.control.afRegions 1648 * android.control.awbRegions 1649 * android.control.afTrigger 1650 * android.control.aePrecaptureTrigger 1651 1652 Outside of android.control.*, the following controls will work: 1653 1654 * android.flash.mode (automatic flash for still capture will not work since aeMode is ON) 1655 * android.lens.opticalStabilizationMode (if it is supported) 1656 * android.scaler.cropRegion 1657 * android.statistics.faceDetectMode 1658 1659 For high speed recording use case, the actual maximum supported frame rate may 1660 be lower than what camera can output, depending on the destination Surfaces for 1661 the image data. For example, if the destination surface is from video encoder, 1662 the application need check if the video encoder is capable of supporting the 1663 high frame rate for a given video size, or it will end up with lower recording 1664 frame rate. If the destination surface is from preview window, the preview frame 1665 rate will be bounded by the screen refresh rate. 1666 1667 The camera device will only support up to 2 output high speed streams 1668 (processed non-stalling format defined in android.request.maxNumOutputStreams) 1669 in this mode. This control will be effective only if all of below conditions are true: 1670 1671 * The application created no more than maxNumHighSpeedStreams processed non-stalling 1672 format output streams, where maxNumHighSpeedStreams is calculated as 1673 min(2, android.request.maxNumOutputStreams[Processed (but not-stalling)]). 1674 * The stream sizes are selected from the sizes reported by 1675 android.control.availableHighSpeedVideoConfigurations. 1676 * No processed non-stalling or raw streams are configured. 1677 1678 When above conditions are NOT satistied, the controls of this mode and 1679 android.control.aeTargetFpsRange will be ignored by the camera device, 1680 the camera device will fall back to android.control.mode `==` AUTO, 1681 and the returned capture result metadata will give the fps range choosen 1682 by the camera device. 1683 1684 Switching into or out of this mode may trigger some camera ISP/sensor 1685 reconfigurations, which may introduce extra latency. It is recommended that 1686 the application avoids unnecessary scene mode switch as much as possible. 1687 </notes> 1688 </value> 1689 <value optional="true">HDR 1690 <notes> 1691 Turn on a device-specific high dynamic range (HDR) mode. 1692 1693 In this scene mode, the camera device captures images 1694 that keep a larger range of scene illumination levels 1695 visible in the final image. For example, when taking a 1696 picture of a object in front of a bright window, both 1697 the object and the scene through the window may be 1698 visible when using HDR mode, while in normal AUTO mode, 1699 one or the other may be poorly exposed. As a tradeoff, 1700 HDR mode generally takes much longer to capture a single 1701 image, has no user control, and may have other artifacts 1702 depending on the HDR method used. 1703 1704 Therefore, HDR captures operate at a much slower rate 1705 than regular captures. 1706 1707 In this mode, on LIMITED or FULL devices, when a request 1708 is made with a android.control.captureIntent of 1709 STILL_CAPTURE, the camera device will capture an image 1710 using a high dynamic range capture technique. On LEGACY 1711 devices, captures that target a JPEG-format output will 1712 be captured with HDR, and the capture intent is not 1713 relevant. 1714 1715 The HDR capture may involve the device capturing a burst 1716 of images internally and combining them into one, or it 1717 may involve the device using specialized high dynamic 1718 range capture hardware. In all cases, a single image is 1719 produced in response to a capture request submitted 1720 while in HDR mode. 1721 1722 Since substantial post-processing is generally needed to 1723 produce an HDR image, only YUV, PRIVATE, and JPEG 1724 outputs are supported for LIMITED/FULL device HDR 1725 captures, and only JPEG outputs are supported for LEGACY 1726 HDR captures. Using a RAW output for HDR capture is not 1727 supported. 1728 1729 Some devices may also support always-on HDR, which 1730 applies HDR processing at full frame rate. For these 1731 devices, intents other than STILL_CAPTURE will also 1732 produce an HDR output with no frame rate impact compared 1733 to normal operation, though the quality may be lower 1734 than for STILL_CAPTURE intents. 1735 1736 If SCENE_MODE_HDR is used with unsupported output types 1737 or capture intents, the images captured will be as if 1738 the SCENE_MODE was not enabled at all. 1739 </notes> 1740 </value> 1741 <value optional="true" hidden="true">FACE_PRIORITY_LOW_LIGHT 1742 <notes>Same as FACE_PRIORITY scene mode, except that the camera 1743 device will choose higher sensitivity values (android.sensor.sensitivity) 1744 under low light conditions. 1745 1746 The camera device may be tuned to expose the images in a reduced 1747 sensitivity range to produce the best quality images. For example, 1748 if the android.sensor.info.sensitivityRange gives range of [100, 1600], 1749 the camera device auto-exposure routine tuning process may limit the actual 1750 exposure sensitivity range to [100, 1200] to ensure that the noise level isn't 1751 exessive in order to preserve the image quality. Under this situation, the image under 1752 low light may be under-exposed when the sensor max exposure time (bounded by the 1753 android.control.aeTargetFpsRange when android.control.aeMode is one of the 1754 ON_* modes) and effective max sensitivity are reached. This scene mode allows the 1755 camera device auto-exposure routine to increase the sensitivity up to the max 1756 sensitivity specified by android.sensor.info.sensitivityRange when the scene is too 1757 dark and the max exposure time is reached. The captured images may be noisier 1758 compared with the images captured in normal FACE_PRIORITY mode; therefore, it is 1759 recommended that the application only use this scene mode when it is capable of 1760 reducing the noise level of the captured images. 1761 1762 Unlike the other scene modes, android.control.aeMode, 1763 android.control.awbMode, and android.control.afMode 1764 remain active when FACE_PRIORITY_LOW_LIGHT is set. 1765 </notes> 1766 </value> 1767 <value optional="true" hidden="true" id="100">DEVICE_CUSTOM_START 1768 <notes> 1769 Scene mode values within the range of 1770 `[DEVICE_CUSTOM_START, DEVICE_CUSTOM_END]` are reserved for device specific 1771 customized scene modes. 1772 </notes> 1773 </value> 1774 <value optional="true" hidden="true" id="127">DEVICE_CUSTOM_END 1775 <notes> 1776 Scene mode values within the range of 1777 `[DEVICE_CUSTOM_START, DEVICE_CUSTOM_END]` are reserved for device specific 1778 customized scene modes. 1779 </notes> 1780 </value> 1781 </enum> 1782 <description> 1783 Control for which scene mode is currently active. 1784 </description> 1785 <range>android.control.availableSceneModes</range> 1786 <details> 1787 Scene modes are custom camera modes optimized for a certain set of conditions and 1788 capture settings. 1789 1790 This is the mode that that is active when 1791 `android.control.mode == USE_SCENE_MODE`. Aside from FACE_PRIORITY, these modes will 1792 disable android.control.aeMode, android.control.awbMode, and android.control.afMode 1793 while in use. 1794 1795 The interpretation and implementation of these scene modes is left 1796 to the implementor of the camera device. Their behavior will not be 1797 consistent across all devices, and any given device may only implement 1798 a subset of these modes. 1799 </details> 1800 <hal_details> 1801 HAL implementations that include scene modes are expected to provide 1802 the per-scene settings to use for android.control.aeMode, 1803 android.control.awbMode, and android.control.afMode in 1804 android.control.sceneModeOverrides. 1805 1806 For HIGH_SPEED_VIDEO mode, if it is included in android.control.availableSceneModes, 1807 the HAL must list supported video size and fps range in 1808 android.control.availableHighSpeedVideoConfigurations. For a given size, e.g. 1809 1280x720, if the HAL has two different sensor configurations for normal streaming 1810 mode and high speed streaming, when this scene mode is set/reset in a sequence of capture 1811 requests, the HAL may have to switch between different sensor modes. 1812 This mode is deprecated in HAL3.3, to support high speed video recording, please implement 1813 android.control.availableHighSpeedVideoConfigurations and CONSTRAINED_HIGH_SPEED_VIDEO 1814 capbility defined in android.request.availableCapabilities. 1815 </hal_details> 1816 <tag id="BC" /> 1817 </entry> 1818 <entry name="videoStabilizationMode" type="byte" visibility="public" 1819 enum="true" hwlevel="legacy"> 1820 <enum> 1821 <value>OFF 1822 <notes> 1823 Video stabilization is disabled. 1824 </notes></value> 1825 <value>ON 1826 <notes> 1827 Video stabilization is enabled. 1828 </notes></value> 1829 </enum> 1830 <description>Whether video stabilization is 1831 active.</description> 1832 <details> 1833 Video stabilization automatically warps images from 1834 the camera in order to stabilize motion between consecutive frames. 1835 1836 If enabled, video stabilization can modify the 1837 android.scaler.cropRegion to keep the video stream stabilized. 1838 1839 Switching between different video stabilization modes may take several 1840 frames to initialize, the camera device will report the current mode 1841 in capture result metadata. For example, When "ON" mode is requested, 1842 the video stabilization modes in the first several capture results may 1843 still be "OFF", and it will become "ON" when the initialization is 1844 done. 1845 1846 In addition, not all recording sizes or frame rates may be supported for 1847 stabilization by a device that reports stabilization support. It is guaranteed 1848 that an output targeting a MediaRecorder or MediaCodec will be stabilized if 1849 the recording resolution is less than or equal to 1920 x 1080 (width less than 1850 or equal to 1920, height less than or equal to 1080), and the recording 1851 frame rate is less than or equal to 30fps. At other sizes, the CaptureResult 1852 android.control.videoStabilizationMode field will return 1853 OFF if the recording output is not stabilized, or if there are no output 1854 Surface types that can be stabilized. 1855 1856 If a camera device supports both this mode and OIS 1857 (android.lens.opticalStabilizationMode), turning both modes on may 1858 produce undesirable interaction, so it is recommended not to enable 1859 both at the same time. 1860 </details> 1861 <tag id="BC" /> 1862 </entry> 1863 </controls> 1864 <static> 1865 <entry name="aeAvailableAntibandingModes" type="byte" visibility="public" 1866 type_notes="list of enums" container="array" typedef="enumList" 1867 hwlevel="legacy"> 1868 <array> 1869 <size>n</size> 1870 </array> 1871 <description> 1872 List of auto-exposure antibanding modes for android.control.aeAntibandingMode that are 1873 supported by this camera device. 1874 </description> 1875 <range>Any value listed in android.control.aeAntibandingMode</range> 1876 <details> 1877 Not all of the auto-exposure anti-banding modes may be 1878 supported by a given camera device. This field lists the 1879 valid anti-banding modes that the application may request 1880 for this camera device with the 1881 android.control.aeAntibandingMode control. 1882 </details> 1883 <tag id="BC" /> 1884 </entry> 1885 <entry name="aeAvailableModes" type="byte" visibility="public" 1886 type_notes="list of enums" container="array" typedef="enumList" 1887 hwlevel="legacy"> 1888 <array> 1889 <size>n</size> 1890 </array> 1891 <description> 1892 List of auto-exposure modes for android.control.aeMode that are supported by this camera 1893 device. 1894 </description> 1895 <range>Any value listed in android.control.aeMode</range> 1896 <details> 1897 Not all the auto-exposure modes may be supported by a 1898 given camera device, especially if no flash unit is 1899 available. This entry lists the valid modes for 1900 android.control.aeMode for this camera device. 1901 1902 All camera devices support ON, and all camera devices with flash 1903 units support ON_AUTO_FLASH and ON_ALWAYS_FLASH. 1904 1905 FULL mode camera devices always support OFF mode, 1906 which enables application control of camera exposure time, 1907 sensitivity, and frame duration. 1908 1909 LEGACY mode camera devices never support OFF mode. 1910 LIMITED mode devices support OFF if they support the MANUAL_SENSOR 1911 capability. 1912 </details> 1913 <tag id="BC" /> 1914 </entry> 1915 <entry name="aeAvailableTargetFpsRanges" type="int32" visibility="public" 1916 type_notes="list of pairs of frame rates" 1917 container="array" typedef="rangeInt" 1918 hwlevel="legacy"> 1919 <array> 1920 <size>2</size> 1921 <size>n</size> 1922 </array> 1923 <description>List of frame rate ranges for android.control.aeTargetFpsRange supported by 1924 this camera device.</description> 1925 <units>Frames per second (FPS)</units> 1926 <details> 1927 For devices at the LEGACY level or above: 1928 1929 * For constant-framerate recording, for each normal 1930 [CamcorderProfile](https://developer.android.com/reference/android/media/CamcorderProfile.html), that is, a 1931 [CamcorderProfile](https://developer.android.com/reference/android/media/CamcorderProfile.html) that has 1932 [quality](https://developer.android.com/reference/android/media/CamcorderProfile.html#quality) 1933 in the range [ 1934 [QUALITY_LOW](https://developer.android.com/reference/android/media/CamcorderProfile.html#QUALITY_LOW), 1935 [QUALITY_2160P](https://developer.android.com/reference/android/media/CamcorderProfile.html#QUALITY_2160P)], 1936 if the profile is supported by the device and has 1937 [videoFrameRate](https://developer.android.com/reference/android/media/CamcorderProfile.html#videoFrameRate) 1938 `x`, this list will always include (`x`,`x`). 1939 1940 * Also, a camera device must either not support any 1941 [CamcorderProfile](https://developer.android.com/reference/android/media/CamcorderProfile.html), 1942 or support at least one 1943 normal [CamcorderProfile](https://developer.android.com/reference/android/media/CamcorderProfile.html) 1944 that has 1945 [videoFrameRate](https://developer.android.com/reference/android/media/CamcorderProfile.html#videoFrameRate) `x` >= 24. 1946 1947 For devices at the LIMITED level or above: 1948 1949 * For YUV_420_888 burst capture use case, this list will always include (`min`, `max`) 1950 and (`max`, `max`) where `min` <= 15 and `max` = the maximum output frame rate of the 1951 maximum YUV_420_888 output size. 1952 </details> 1953 <tag id="BC" /> 1954 </entry> 1955 <entry name="aeCompensationRange" type="int32" visibility="public" 1956 container="array" typedef="rangeInt" 1957 hwlevel="legacy"> 1958 <array> 1959 <size>2</size> 1960 </array> 1961 <description>Maximum and minimum exposure compensation values for 1962 android.control.aeExposureCompensation, in counts of android.control.aeCompensationStep, 1963 that are supported by this camera device.</description> 1964 <range> 1965 Range [0,0] indicates that exposure compensation is not supported. 1966 1967 For LIMITED and FULL devices, range must follow below requirements if exposure 1968 compensation is supported (`range != [0, 0]`): 1969 1970 `Min.exposure compensation * android.control.aeCompensationStep <= -2 EV` 1971 1972 `Max.exposure compensation * android.control.aeCompensationStep >= 2 EV` 1973 1974 LEGACY devices may support a smaller range than this. 1975 </range> 1976 <tag id="BC" /> 1977 </entry> 1978 <entry name="aeCompensationStep" type="rational" visibility="public" 1979 hwlevel="legacy"> 1980 <description>Smallest step by which the exposure compensation 1981 can be changed.</description> 1982 <units>Exposure Value (EV)</units> 1983 <details> 1984 This is the unit for android.control.aeExposureCompensation. For example, if this key has 1985 a value of `1/2`, then a setting of `-2` for android.control.aeExposureCompensation means 1986 that the target EV offset for the auto-exposure routine is -1 EV. 1987 1988 One unit of EV compensation changes the brightness of the captured image by a factor 1989 of two. +1 EV doubles the image brightness, while -1 EV halves the image brightness. 1990 </details> 1991 <hal_details> 1992 This must be less than or equal to 1/2. 1993 </hal_details> 1994 <tag id="BC" /> 1995 </entry> 1996 <entry name="afAvailableModes" type="byte" visibility="public" 1997 type_notes="List of enums" container="array" typedef="enumList" 1998 hwlevel="legacy"> 1999 <array> 2000 <size>n</size> 2001 </array> 2002 <description> 2003 List of auto-focus (AF) modes for android.control.afMode that are 2004 supported by this camera device. 2005 </description> 2006 <range>Any value listed in android.control.afMode</range> 2007 <details> 2008 Not all the auto-focus modes may be supported by a 2009 given camera device. This entry lists the valid modes for 2010 android.control.afMode for this camera device. 2011 2012 All LIMITED and FULL mode camera devices will support OFF mode, and all 2013 camera devices with adjustable focuser units 2014 (`android.lens.info.minimumFocusDistance > 0`) will support AUTO mode. 2015 2016 LEGACY devices will support OFF mode only if they support 2017 focusing to infinity (by also setting android.lens.focusDistance to 2018 `0.0f`). 2019 </details> 2020 <tag id="BC" /> 2021 </entry> 2022 <entry name="availableEffects" type="byte" visibility="public" 2023 type_notes="List of enums (android.control.effectMode)." container="array" 2024 typedef="enumList" hwlevel="legacy"> 2025 <array> 2026 <size>n</size> 2027 </array> 2028 <description> 2029 List of color effects for android.control.effectMode that are supported by this camera 2030 device. 2031 </description> 2032 <range>Any value listed in android.control.effectMode</range> 2033 <details> 2034 This list contains the color effect modes that can be applied to 2035 images produced by the camera device. 2036 Implementations are not expected to be consistent across all devices. 2037 If no color effect modes are available for a device, this will only list 2038 OFF. 2039 2040 A color effect will only be applied if 2041 android.control.mode != OFF. OFF is always included in this list. 2042 2043 This control has no effect on the operation of other control routines such 2044 as auto-exposure, white balance, or focus. 2045 </details> 2046 <tag id="BC" /> 2047 </entry> 2048 <entry name="availableSceneModes" type="byte" visibility="public" 2049 type_notes="List of enums (android.control.sceneMode)." 2050 container="array" typedef="enumList" hwlevel="legacy"> 2051 <array> 2052 <size>n</size> 2053 </array> 2054 <description> 2055 List of scene modes for android.control.sceneMode that are supported by this camera 2056 device. 2057 </description> 2058 <range>Any value listed in android.control.sceneMode</range> 2059 <details> 2060 This list contains scene modes that can be set for the camera device. 2061 Only scene modes that have been fully implemented for the 2062 camera device may be included here. Implementations are not expected 2063 to be consistent across all devices. 2064 2065 If no scene modes are supported by the camera device, this 2066 will be set to DISABLED. Otherwise DISABLED will not be listed. 2067 2068 FACE_PRIORITY is always listed if face detection is 2069 supported (i.e.`android.statistics.info.maxFaceCount > 2070 0`). 2071 </details> 2072 <tag id="BC" /> 2073 </entry> 2074 <entry name="availableVideoStabilizationModes" type="byte" 2075 visibility="public" type_notes="List of enums." container="array" 2076 typedef="enumList" hwlevel="legacy"> 2077 <array> 2078 <size>n</size> 2079 </array> 2080 <description> 2081 List of video stabilization modes for android.control.videoStabilizationMode 2082 that are supported by this camera device. 2083 </description> 2084 <range>Any value listed in android.control.videoStabilizationMode</range> 2085 <details> 2086 OFF will always be listed. 2087 </details> 2088 <tag id="BC" /> 2089 </entry> 2090 <entry name="awbAvailableModes" type="byte" visibility="public" 2091 type_notes="List of enums" 2092 container="array" typedef="enumList" hwlevel="legacy"> 2093 <array> 2094 <size>n</size> 2095 </array> 2096 <description> 2097 List of auto-white-balance modes for android.control.awbMode that are supported by this 2098 camera device. 2099 </description> 2100 <range>Any value listed in android.control.awbMode</range> 2101 <details> 2102 Not all the auto-white-balance modes may be supported by a 2103 given camera device. This entry lists the valid modes for 2104 android.control.awbMode for this camera device. 2105 2106 All camera devices will support ON mode. 2107 2108 Camera devices that support the MANUAL_POST_PROCESSING capability will always support OFF 2109 mode, which enables application control of white balance, by using 2110 android.colorCorrection.transform and android.colorCorrection.gains 2111 (android.colorCorrection.mode must be set to TRANSFORM_MATRIX). This includes all FULL 2112 mode camera devices. 2113 </details> 2114 <tag id="BC" /> 2115 </entry> 2116 <entry name="maxRegions" type="int32" visibility="ndk_public" 2117 container="array" hwlevel="legacy"> 2118 <array> 2119 <size>3</size> 2120 </array> 2121 <description> 2122 List of the maximum number of regions that can be used for metering in 2123 auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF); 2124 this corresponds to the the maximum number of elements in 2125 android.control.aeRegions, android.control.awbRegions, 2126 and android.control.afRegions. 2127 </description> 2128 <range> 2129 Value must be &gt;= 0 for each element. For full-capability devices 2130 this value must be &gt;= 1 for AE and AF. The order of the elements is: 2131 `(AE, AWB, AF)`.</range> 2132 <tag id="BC" /> 2133 </entry> 2134 <entry name="maxRegionsAe" type="int32" visibility="java_public" 2135 synthetic="true" hwlevel="legacy"> 2136 <description> 2137 The maximum number of metering regions that can be used by the auto-exposure (AE) 2138 routine. 2139 </description> 2140 <range>Value will be &gt;= 0. For FULL-capability devices, this 2141 value will be &gt;= 1. 2142 </range> 2143 <details> 2144 This corresponds to the the maximum allowed number of elements in 2145 android.control.aeRegions. 2146 </details> 2147 <hal_details>This entry is private to the framework. Fill in 2148 maxRegions to have this entry be automatically populated. 2149 </hal_details> 2150 </entry> 2151 <entry name="maxRegionsAwb" type="int32" visibility="java_public" 2152 synthetic="true" hwlevel="legacy"> 2153 <description> 2154 The maximum number of metering regions that can be used by the auto-white balance (AWB) 2155 routine. 2156 </description> 2157 <range>Value will be &gt;= 0. 2158 </range> 2159 <details> 2160 This corresponds to the the maximum allowed number of elements in 2161 android.control.awbRegions. 2162 </details> 2163 <hal_details>This entry is private to the framework. Fill in 2164 maxRegions to have this entry be automatically populated. 2165 </hal_details> 2166 </entry> 2167 <entry name="maxRegionsAf" type="int32" visibility="java_public" 2168 synthetic="true" hwlevel="legacy"> 2169 <description> 2170 The maximum number of metering regions that can be used by the auto-focus (AF) routine. 2171 </description> 2172 <range>Value will be &gt;= 0. For FULL-capability devices, this 2173 value will be &gt;= 1. 2174 </range> 2175 <details> 2176 This corresponds to the the maximum allowed number of elements in 2177 android.control.afRegions. 2178 </details> 2179 <hal_details>This entry is private to the framework. Fill in 2180 maxRegions to have this entry be automatically populated. 2181 </hal_details> 2182 </entry> 2183 <entry name="sceneModeOverrides" type="byte" visibility="system" 2184 container="array" hwlevel="limited"> 2185 <array> 2186 <size>3</size> 2187 <size>length(availableSceneModes)</size> 2188 </array> 2189 <description> 2190 Ordered list of auto-exposure, auto-white balance, and auto-focus 2191 settings to use with each available scene mode. 2192 </description> 2193 <range> 2194 For each available scene mode, the list must contain three 2195 entries containing the android.control.aeMode, 2196 android.control.awbMode, and android.control.afMode values used 2197 by the camera device. The entry order is `(aeMode, awbMode, afMode)` 2198 where aeMode has the lowest index position. 2199 </range> 2200 <details> 2201 When a scene mode is enabled, the camera device is expected 2202 to override android.control.aeMode, android.control.awbMode, 2203 and android.control.afMode with its preferred settings for 2204 that scene mode. 2205 2206 The order of this list matches that of availableSceneModes, 2207 with 3 entries for each mode. The overrides listed 2208 for FACE_PRIORITY and FACE_PRIORITY_LOW_LIGHT (if supported) are ignored, 2209 since for that mode the application-set android.control.aeMode, 2210 android.control.awbMode, and android.control.afMode values are 2211 used instead, matching the behavior when android.control.mode 2212 is set to AUTO. It is recommended that the FACE_PRIORITY and 2213 FACE_PRIORITY_LOW_LIGHT (if supported) overrides should be set to 0. 2214 2215 For example, if availableSceneModes contains 2216 `(FACE_PRIORITY, ACTION, NIGHT)`, then the camera framework 2217 expects sceneModeOverrides to have 9 entries formatted like: 2218 `(0, 0, 0, ON_AUTO_FLASH, AUTO, CONTINUOUS_PICTURE, 2219 ON_AUTO_FLASH, INCANDESCENT, AUTO)`. 2220 </details> 2221 <hal_details> 2222 To maintain backward compatibility, this list will be made available 2223 in the static metadata of the camera service. The camera service will 2224 use these values to set android.control.aeMode, 2225 android.control.awbMode, and android.control.afMode when using a scene 2226 mode other than FACE_PRIORITY and FACE_PRIORITY_LOW_LIGHT (if supported). 2227 </hal_details> 2228 <tag id="BC" /> 2229 </entry> 2230 </static> 2231 <dynamic> 2232 <entry name="aePrecaptureId" type="int32" visibility="system" deprecated="true"> 2233 <description>The ID sent with the latest 2234 CAMERA2_TRIGGER_PRECAPTURE_METERING call</description> 2235 <details>Must be 0 if no 2236 CAMERA2_TRIGGER_PRECAPTURE_METERING trigger received yet 2237 by HAL. Always updated even if AE algorithm ignores the 2238 trigger</details> 2239 </entry> 2240 <clone entry="android.control.aeAntibandingMode" kind="controls"> 2241 </clone> 2242 <clone entry="android.control.aeExposureCompensation" kind="controls"> 2243 </clone> 2244 <clone entry="android.control.aeLock" kind="controls"> 2245 </clone> 2246 <clone entry="android.control.aeMode" kind="controls"> 2247 </clone> 2248 <clone entry="android.control.aeRegions" kind="controls"> 2249 </clone> 2250 <clone entry="android.control.aeTargetFpsRange" kind="controls"> 2251 </clone> 2252 <clone entry="android.control.aePrecaptureTrigger" kind="controls"> 2253 </clone> 2254 <entry name="aeState" type="byte" visibility="public" enum="true" 2255 hwlevel="limited"> 2256 <enum> 2257 <value>INACTIVE 2258 <notes>AE is off or recently reset. 2259 2260 When a camera device is opened, it starts in 2261 this state. This is a transient state, the camera device may skip reporting 2262 this state in capture result.</notes></value> 2263 <value>SEARCHING 2264 <notes>AE doesn't yet have a good set of control values 2265 for the current scene. 2266 2267 This is a transient state, the camera device may skip 2268 reporting this state in capture result.</notes></value> 2269 <value>CONVERGED 2270 <notes>AE has a good set of control values for the 2271 current scene.</notes></value> 2272 <value>LOCKED 2273 <notes>AE has been locked.</notes></value> 2274 <value>FLASH_REQUIRED 2275 <notes>AE has a good set of control values, but flash 2276 needs to be fired for good quality still 2277 capture.</notes></value> 2278 <value>PRECAPTURE 2279 <notes>AE has been asked to do a precapture sequence 2280 and is currently executing it. 2281 2282 Precapture can be triggered through setting 2283 android.control.aePrecaptureTrigger to START. Currently 2284 active and completed (if it causes camera device internal AE lock) precapture 2285 metering sequence can be canceled through setting 2286 android.control.aePrecaptureTrigger to CANCEL. 2287 2288 Once PRECAPTURE completes, AE will transition to CONVERGED 2289 or FLASH_REQUIRED as appropriate. This is a transient 2290 state, the camera device may skip reporting this state in 2291 capture result.</notes></value> 2292 </enum> 2293 <description>Current state of the auto-exposure (AE) algorithm.</description> 2294 <details>Switching between or enabling AE modes (android.control.aeMode) always 2295 resets the AE state to INACTIVE. Similarly, switching between android.control.mode, 2296 or android.control.sceneMode if `android.control.mode == USE_SCENE_MODE` resets all 2297 the algorithm states to INACTIVE. 2298 2299 The camera device can do several state transitions between two results, if it is 2300 allowed by the state transition table. For example: INACTIVE may never actually be 2301 seen in a result. 2302 2303 The state in the result is the state for this image (in sync with this image): if 2304 AE state becomes CONVERGED, then the image data associated with this result should 2305 be good to use. 2306 2307 Below are state transition tables for different AE modes. 2308 2309 State | Transition Cause | New State | Notes 2310 :------------:|:----------------:|:---------:|:-----------------------: 2311 INACTIVE | | INACTIVE | Camera device auto exposure algorithm is disabled 2312 2313 When android.control.aeMode is AE_MODE_ON_*: 2314 2315 State | Transition Cause | New State | Notes 2316 :-------------:|:--------------------------------------------:|:--------------:|:-----------------: 2317 INACTIVE | Camera device initiates AE scan | SEARCHING | Values changing 2318 INACTIVE | android.control.aeLock is ON | LOCKED | Values locked 2319 SEARCHING | Camera device finishes AE scan | CONVERGED | Good values, not changing 2320 SEARCHING | Camera device finishes AE scan | FLASH_REQUIRED | Converged but too dark w/o flash 2321 SEARCHING | android.control.aeLock is ON | LOCKED | Values locked 2322 CONVERGED | Camera device initiates AE scan | SEARCHING | Values changing 2323 CONVERGED | android.control.aeLock is ON | LOCKED | Values locked 2324 FLASH_REQUIRED | Camera device initiates AE scan | SEARCHING | Values changing 2325 FLASH_REQUIRED | android.control.aeLock is ON | LOCKED | Values locked 2326 LOCKED | android.control.aeLock is OFF | SEARCHING | Values not good after unlock 2327 LOCKED | android.control.aeLock is OFF | CONVERGED | Values good after unlock 2328 LOCKED | android.control.aeLock is OFF | FLASH_REQUIRED | Exposure good, but too dark 2329 PRECAPTURE | Sequence done. android.control.aeLock is OFF | CONVERGED | Ready for high-quality capture 2330 PRECAPTURE | Sequence done. android.control.aeLock is ON | LOCKED | Ready for high-quality capture 2331 LOCKED | aeLock is ON and aePrecaptureTrigger is START | LOCKED | Precapture trigger is ignored when AE is already locked 2332 LOCKED | aeLock is ON and aePrecaptureTrigger is CANCEL| LOCKED | Precapture trigger is ignored when AE is already locked 2333 Any state (excluding LOCKED) | android.control.aePrecaptureTrigger is START | PRECAPTURE | Start AE precapture metering sequence 2334 Any state (excluding LOCKED) | android.control.aePrecaptureTrigger is CANCEL| INACTIVE | Currently active precapture metering sequence is canceled 2335 2336 For the above table, the camera device may skip reporting any state changes that happen 2337 without application intervention (i.e. mode switch, trigger, locking). Any state that 2338 can be skipped in that manner is called a transient state. 2339 2340 For example, for above AE modes (AE_MODE_ON_*), in addition to the state transitions 2341 listed in above table, it is also legal for the camera device to skip one or more 2342 transient states between two results. See below table for examples: 2343 2344 State | Transition Cause | New State | Notes 2345 :-------------:|:-----------------------------------------------------------:|:--------------:|:-----------------: 2346 INACTIVE | Camera device finished AE scan | CONVERGED | Values are already good, transient states are skipped by camera device. 2347 Any state (excluding LOCKED) | android.control.aePrecaptureTrigger is START, sequence done | FLASH_REQUIRED | Converged but too dark w/o flash after a precapture sequence, transient states are skipped by camera device. 2348 Any state (excluding LOCKED) | android.control.aePrecaptureTrigger is START, sequence done | CONVERGED | Converged after a precapture sequence, transient states are skipped by camera device. 2349 Any state (excluding LOCKED) | android.control.aePrecaptureTrigger is CANCEL, converged | FLASH_REQUIRED | Converged but too dark w/o flash after a precapture sequence is canceled, transient states are skipped by camera device. 2350 Any state (excluding LOCKED) | android.control.aePrecaptureTrigger is CANCEL, converged | CONVERGED | Converged after a precapture sequenceis canceled, transient states are skipped by camera device. 2351 CONVERGED | Camera device finished AE scan | FLASH_REQUIRED | Converged but too dark w/o flash after a new scan, transient states are skipped by camera device. 2352 FLASH_REQUIRED | Camera device finished AE scan | CONVERGED | Converged after a new scan, transient states are skipped by camera device. 2353 </details> 2354 </entry> 2355 <clone entry="android.control.afMode" kind="controls"> 2356 </clone> 2357 <clone entry="android.control.afRegions" kind="controls"> 2358 </clone> 2359 <clone entry="android.control.afTrigger" kind="controls"> 2360 </clone> 2361 <entry name="afState" type="byte" visibility="public" enum="true" 2362 hwlevel="legacy"> 2363 <enum> 2364 <value>INACTIVE 2365 <notes>AF is off or has not yet tried to scan/been asked 2366 to scan. 2367 2368 When a camera device is opened, it starts in this 2369 state. This is a transient state, the camera device may 2370 skip reporting this state in capture 2371 result.</notes></value> 2372 <value>PASSIVE_SCAN 2373 <notes>AF is currently performing an AF scan initiated the 2374 camera device in a continuous autofocus mode. 2375 2376 Only used by CONTINUOUS_* AF modes. This is a transient 2377 state, the camera device may skip reporting this state in 2378 capture result.</notes></value> 2379 <value>PASSIVE_FOCUSED 2380 <notes>AF currently believes it is in focus, but may 2381 restart scanning at any time. 2382 2383 Only used by CONTINUOUS_* AF modes. This is a transient 2384 state, the camera device may skip reporting this state in 2385 capture result.</notes></value> 2386 <value>ACTIVE_SCAN 2387 <notes>AF is performing an AF scan because it was 2388 triggered by AF trigger. 2389 2390 Only used by AUTO or MACRO AF modes. This is a transient 2391 state, the camera device may skip reporting this state in 2392 capture result.</notes></value> 2393 <value>FOCUSED_LOCKED 2394 <notes>AF believes it is focused correctly and has locked 2395 focus. 2396 2397 This state is reached only after an explicit START AF trigger has been 2398 sent (android.control.afTrigger), when good focus has been obtained. 2399 2400 The lens will remain stationary until the AF mode (android.control.afMode) is changed or 2401 a new AF trigger is sent to the camera device (android.control.afTrigger). 2402 </notes></value> 2403 <value>NOT_FOCUSED_LOCKED 2404 <notes>AF has failed to focus successfully and has locked 2405 focus. 2406 2407 This state is reached only after an explicit START AF trigger has been 2408 sent (android.control.afTrigger), when good focus cannot be obtained. 2409 2410 The lens will remain stationary until the AF mode (android.control.afMode) is changed or 2411 a new AF trigger is sent to the camera device (android.control.afTrigger). 2412 </notes></value> 2413 <value>PASSIVE_UNFOCUSED 2414 <notes>AF finished a passive scan without finding focus, 2415 and may restart scanning at any time. 2416 2417 Only used by CONTINUOUS_* AF modes. This is a transient state, the camera 2418 device may skip reporting this state in capture result. 2419 2420 LEGACY camera devices do not support this state. When a passive 2421 scan has finished, it will always go to PASSIVE_FOCUSED. 2422 </notes></value> 2423 </enum> 2424 <description>Current state of auto-focus (AF) algorithm.</description> 2425 <details> 2426 Switching between or enabling AF modes (android.control.afMode) always 2427 resets the AF state to INACTIVE. Similarly, switching between android.control.mode, 2428 or android.control.sceneMode if `android.control.mode == USE_SCENE_MODE` resets all 2429 the algorithm states to INACTIVE. 2430 2431 The camera device can do several state transitions between two results, if it is 2432 allowed by the state transition table. For example: INACTIVE may never actually be 2433 seen in a result. 2434 2435 The state in the result is the state for this image (in sync with this image): if 2436 AF state becomes FOCUSED, then the image data associated with this result should 2437 be sharp. 2438 2439 Below are state transition tables for different AF modes. 2440 2441 When android.control.afMode is AF_MODE_OFF or AF_MODE_EDOF: 2442 2443 State | Transition Cause | New State | Notes 2444 :------------:|:----------------:|:---------:|:-----------: 2445 INACTIVE | | INACTIVE | Never changes 2446 2447 When android.control.afMode is AF_MODE_AUTO or AF_MODE_MACRO: 2448 2449 State | Transition Cause | New State | Notes 2450 :-----------------:|:----------------:|:------------------:|:--------------: 2451 INACTIVE | AF_TRIGGER | ACTIVE_SCAN | Start AF sweep, Lens now moving 2452 ACTIVE_SCAN | AF sweep done | FOCUSED_LOCKED | Focused, Lens now locked 2453 ACTIVE_SCAN | AF sweep done | NOT_FOCUSED_LOCKED | Not focused, Lens now locked 2454 ACTIVE_SCAN | AF_CANCEL | INACTIVE | Cancel/reset AF, Lens now locked 2455 FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Cancel/reset AF 2456 FOCUSED_LOCKED | AF_TRIGGER | ACTIVE_SCAN | Start new sweep, Lens now moving 2457 NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Cancel/reset AF 2458 NOT_FOCUSED_LOCKED | AF_TRIGGER | ACTIVE_SCAN | Start new sweep, Lens now moving 2459 Any state | Mode change | INACTIVE | 2460 2461 For the above table, the camera device may skip reporting any state changes that happen 2462 without application intervention (i.e. mode switch, trigger, locking). Any state that 2463 can be skipped in that manner is called a transient state. 2464 2465 For example, for these AF modes (AF_MODE_AUTO and AF_MODE_MACRO), in addition to the 2466 state transitions listed in above table, it is also legal for the camera device to skip 2467 one or more transient states between two results. See below table for examples: 2468 2469 State | Transition Cause | New State | Notes 2470 :-----------------:|:----------------:|:------------------:|:--------------: 2471 INACTIVE | AF_TRIGGER | FOCUSED_LOCKED | Focus is already good or good after a scan, lens is now locked. 2472 INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | Focus failed after a scan, lens is now locked. 2473 FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | Focus is already good or good after a scan, lens is now locked. 2474 NOT_FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | Focus is good after a scan, lens is not locked. 2475 2476 2477 When android.control.afMode is AF_MODE_CONTINUOUS_VIDEO: 2478 2479 State | Transition Cause | New State | Notes 2480 :-----------------:|:-----------------------------------:|:------------------:|:--------------: 2481 INACTIVE | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving 2482 INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | AF state query, Lens now locked 2483 PASSIVE_SCAN | Camera device completes current scan| PASSIVE_FOCUSED | End AF scan, Lens now locked 2484 PASSIVE_SCAN | Camera device fails current scan | PASSIVE_UNFOCUSED | End AF scan, Lens now locked 2485 PASSIVE_SCAN | AF_TRIGGER | FOCUSED_LOCKED | Immediate transition, if focus is good. Lens now locked 2486 PASSIVE_SCAN | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate transition, if focus is bad. Lens now locked 2487 PASSIVE_SCAN | AF_CANCEL | INACTIVE | Reset lens position, Lens now locked 2488 PASSIVE_FOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving 2489 PASSIVE_UNFOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving 2490 PASSIVE_FOCUSED | AF_TRIGGER | FOCUSED_LOCKED | Immediate transition, lens now locked 2491 PASSIVE_UNFOCUSED | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate transition, lens now locked 2492 FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | No effect 2493 FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan 2494 NOT_FOCUSED_LOCKED | AF_TRIGGER | NOT_FOCUSED_LOCKED | No effect 2495 NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan 2496 2497 When android.control.afMode is AF_MODE_CONTINUOUS_PICTURE: 2498 2499 State | Transition Cause | New State | Notes 2500 :-----------------:|:------------------------------------:|:------------------:|:--------------: 2501 INACTIVE | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving 2502 INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | AF state query, Lens now locked 2503 PASSIVE_SCAN | Camera device completes current scan | PASSIVE_FOCUSED | End AF scan, Lens now locked 2504 PASSIVE_SCAN | Camera device fails current scan | PASSIVE_UNFOCUSED | End AF scan, Lens now locked 2505 PASSIVE_SCAN | AF_TRIGGER | FOCUSED_LOCKED | Eventual transition once the focus is good. Lens now locked 2506 PASSIVE_SCAN | AF_TRIGGER | NOT_FOCUSED_LOCKED | Eventual transition if cannot find focus. Lens now locked 2507 PASSIVE_SCAN | AF_CANCEL | INACTIVE | Reset lens position, Lens now locked 2508 PASSIVE_FOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving 2509 PASSIVE_UNFOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving 2510 PASSIVE_FOCUSED | AF_TRIGGER | FOCUSED_LOCKED | Immediate trans. Lens now locked 2511 PASSIVE_UNFOCUSED | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate trans. Lens now locked 2512 FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | No effect 2513 FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan 2514 NOT_FOCUSED_LOCKED | AF_TRIGGER | NOT_FOCUSED_LOCKED | No effect 2515 NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan 2516 2517 When switch between AF_MODE_CONTINUOUS_* (CAF modes) and AF_MODE_AUTO/AF_MODE_MACRO 2518 (AUTO modes), the initial INACTIVE or PASSIVE_SCAN states may be skipped by the 2519 camera device. When a trigger is included in a mode switch request, the trigger 2520 will be evaluated in the context of the new mode in the request. 2521 See below table for examples: 2522 2523 State | Transition Cause | New State | Notes 2524 :-----------:|:--------------------------------------:|:----------------------------------------:|:--------------: 2525 any state | CAF-->AUTO mode switch | INACTIVE | Mode switch without trigger, initial state must be INACTIVE 2526 any state | CAF-->AUTO mode switch with AF_TRIGGER | trigger-reachable states from INACTIVE | Mode switch with trigger, INACTIVE is skipped 2527 any state | AUTO-->CAF mode switch | passively reachable states from INACTIVE | Mode switch without trigger, passive transient state is skipped 2528 </details> 2529 </entry> 2530 <entry name="afTriggerId" type="int32" visibility="system" deprecated="true"> 2531 <description>The ID sent with the latest 2532 CAMERA2_TRIGGER_AUTOFOCUS call</description> 2533 <details>Must be 0 if no CAMERA2_TRIGGER_AUTOFOCUS trigger 2534 received yet by HAL. Always updated even if AF algorithm 2535 ignores the trigger</details> 2536 </entry> 2537 <clone entry="android.control.awbLock" kind="controls"> 2538 </clone> 2539 <clone entry="android.control.awbMode" kind="controls"> 2540 </clone> 2541 <clone entry="android.control.awbRegions" kind="controls"> 2542 </clone> 2543 <clone entry="android.control.captureIntent" kind="controls"> 2544 </clone> 2545 <entry name="awbState" type="byte" visibility="public" enum="true" 2546 hwlevel="limited"> 2547 <enum> 2548 <value>INACTIVE 2549 <notes>AWB is not in auto mode, or has not yet started metering. 2550 2551 When a camera device is opened, it starts in this 2552 state. This is a transient state, the camera device may 2553 skip reporting this state in capture 2554 result.</notes></value> 2555 <value>SEARCHING 2556 <notes>AWB doesn't yet have a good set of control 2557 values for the current scene. 2558 2559 This is a transient state, the camera device 2560 may skip reporting this state in capture result.</notes></value> 2561 <value>CONVERGED 2562 <notes>AWB has a good set of control values for the 2563 current scene.</notes></value> 2564 <value>LOCKED 2565 <notes>AWB has been locked. 2566 </notes></value> 2567 </enum> 2568 <description>Current state of auto-white balance (AWB) algorithm.</description> 2569 <details>Switching between or enabling AWB modes (android.control.awbMode) always 2570 resets the AWB state to INACTIVE. Similarly, switching between android.control.mode, 2571 or android.control.sceneMode if `android.control.mode == USE_SCENE_MODE` resets all 2572 the algorithm states to INACTIVE. 2573 2574 The camera device can do several state transitions between two results, if it is 2575 allowed by the state transition table. So INACTIVE may never actually be seen in 2576 a result. 2577 2578 The state in the result is the state for this image (in sync with this image): if 2579 AWB state becomes CONVERGED, then the image data associated with this result should 2580 be good to use. 2581 2582 Below are state transition tables for different AWB modes. 2583 2584 When `android.control.awbMode != AWB_MODE_AUTO`: 2585 2586 State | Transition Cause | New State | Notes 2587 :------------:|:----------------:|:---------:|:-----------------------: 2588 INACTIVE | |INACTIVE |Camera device auto white balance algorithm is disabled 2589 2590 When android.control.awbMode is AWB_MODE_AUTO: 2591 2592 State | Transition Cause | New State | Notes 2593 :-------------:|:--------------------------------:|:-------------:|:-----------------: 2594 INACTIVE | Camera device initiates AWB scan | SEARCHING | Values changing 2595 INACTIVE | android.control.awbLock is ON | LOCKED | Values locked 2596 SEARCHING | Camera device finishes AWB scan | CONVERGED | Good values, not changing 2597 SEARCHING | android.control.awbLock is ON | LOCKED | Values locked 2598 CONVERGED | Camera device initiates AWB scan | SEARCHING | Values changing 2599 CONVERGED | android.control.awbLock is ON | LOCKED | Values locked 2600 LOCKED | android.control.awbLock is OFF | SEARCHING | Values not good after unlock 2601 2602 For the above table, the camera device may skip reporting any state changes that happen 2603 without application intervention (i.e. mode switch, trigger, locking). Any state that 2604 can be skipped in that manner is called a transient state. 2605 2606 For example, for this AWB mode (AWB_MODE_AUTO), in addition to the state transitions 2607 listed in above table, it is also legal for the camera device to skip one or more 2608 transient states between two results. See below table for examples: 2609 2610 State | Transition Cause | New State | Notes 2611 :-------------:|:--------------------------------:|:-------------:|:-----------------: 2612 INACTIVE | Camera device finished AWB scan | CONVERGED | Values are already good, transient states are skipped by camera device. 2613 LOCKED | android.control.awbLock is OFF | CONVERGED | Values good after unlock, transient states are skipped by camera device. 2614 </details> 2615 </entry> 2616 <clone entry="android.control.effectMode" kind="controls"> 2617 </clone> 2618 <clone entry="android.control.mode" kind="controls"> 2619 </clone> 2620 <clone entry="android.control.sceneMode" kind="controls"> 2621 </clone> 2622 <clone entry="android.control.videoStabilizationMode" kind="controls"> 2623 </clone> 2624 </dynamic> 2625 <static> 2626 <entry name="availableHighSpeedVideoConfigurations" type="int32" visibility="hidden" 2627 container="array" typedef="highSpeedVideoConfiguration" hwlevel="limited"> 2628 <array> 2629 <size>5</size> 2630 <size>n</size> 2631 </array> 2632 <description> 2633 List of available high speed video size, fps range and max batch size configurations 2634 supported by the camera device, in the format of (width, height, fps_min, fps_max, batch_size_max). 2635 </description> 2636 <range> 2637 For each configuration, the fps_max &gt;= 120fps. 2638 </range> 2639 <details> 2640 When CONSTRAINED_HIGH_SPEED_VIDEO is supported in android.request.availableCapabilities, 2641 this metadata will list the supported high speed video size, fps range and max batch size 2642 configurations. All the sizes listed in this configuration will be a subset of the sizes 2643 reported by {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes} 2644 for processed non-stalling formats. 2645 2646 For the high speed video use case, the application must 2647 select the video size and fps range from this metadata to configure the recording and 2648 preview streams and setup the recording requests. For example, if the application intends 2649 to do high speed recording, it can select the maximum size reported by this metadata to 2650 configure output streams. Once the size is selected, application can filter this metadata 2651 by selected size and get the supported fps ranges, and use these fps ranges to setup the 2652 recording requests. Note that for the use case of multiple output streams, application 2653 must select one unique size from this metadata to use (e.g., preview and recording streams 2654 must have the same size). Otherwise, the high speed capture session creation will fail. 2655 2656 The min and max fps will be multiple times of 30fps. 2657 2658 High speed video streaming extends significant performance pressue to camera hardware, 2659 to achieve efficient high speed streaming, the camera device may have to aggregate 2660 multiple frames together and send to camera device for processing where the request 2661 controls are same for all the frames in this batch. Max batch size indicates 2662 the max possible number of frames the camera device will group together for this high 2663 speed stream configuration. This max batch size will be used to generate a high speed 2664 recording request list by 2665 {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList}. 2666 The max batch size for each configuration will satisfy below conditions: 2667 2668 * Each max batch size will be a divisor of its corresponding fps_max / 30. For example, 2669 if max_fps is 300, max batch size will only be 1, 2, 5, or 10. 2670 * The camera device may choose smaller internal batch size for each configuration, but 2671 the actual batch size will be a divisor of max batch size. For example, if the max batch 2672 size is 8, the actual batch size used by camera device will only be 1, 2, 4, or 8. 2673 * The max batch size in each configuration entry must be no larger than 32. 2674 2675 The camera device doesn't have to support batch mode to achieve high speed video recording, 2676 in such case, batch_size_max will be reported as 1 in each configuration entry. 2677 2678 This fps ranges in this configuration list can only be used to create requests 2679 that are submitted to a high speed camera capture session created by 2680 {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession}. 2681 The fps ranges reported in this metadata must not be used to setup capture requests for 2682 normal capture session, or it will cause request error. 2683 </details> 2684 <hal_details> 2685 All the sizes listed in this configuration will be a subset of the sizes reported by 2686 android.scaler.availableStreamConfigurations for processed non-stalling output formats. 2687 Note that for all high speed video configurations, HAL must be able to support a minimum 2688 of two streams, though the application might choose to configure just one stream. 2689 2690 The HAL may support multiple sensor modes for high speed outputs, for example, 120fps 2691 sensor mode and 120fps recording, 240fps sensor mode for 240fps recording. The application 2692 usually starts preview first, then starts recording. To avoid sensor mode switch caused 2693 stutter when starting recording as much as possible, the application may want to ensure 2694 the same sensor mode is used for preview and recording. Therefore, The HAL must advertise 2695 the variable fps range [30, fps_max] for each fixed fps range in this configuration list. 2696 For example, if the HAL advertises [120, 120] and [240, 240], the HAL must also advertise 2697 [30, 120] and [30, 240] for each configuration. In doing so, if the application intends to 2698 do 120fps recording, it can select [30, 120] to start preview, and [120, 120] to start 2699 recording. For these variable fps ranges, it's up to the HAL to decide the actual fps 2700 values that are suitable for smooth preview streaming. If the HAL sees different max_fps 2701 values that fall into different sensor modes in a sequence of requests, the HAL must 2702 switch the sensor mode as quick as possible to minimize the mode switch caused stutter. 2703 </hal_details> 2704 <tag id="V1" /> 2705 </entry> 2706 <entry name="aeLockAvailable" type="byte" visibility="public" enum="true" 2707 typedef="boolean" hwlevel="legacy"> 2708 <enum> 2709 <value>FALSE</value> 2710 <value>TRUE</value> 2711 </enum> 2712 <description>Whether the camera device supports android.control.aeLock</description> 2713 <details> 2714 Devices with MANUAL_SENSOR capability or BURST_CAPTURE capability will always 2715 list `true`. This includes FULL devices. 2716 </details> 2717 <tag id="BC"/> 2718 </entry> 2719 <entry name="awbLockAvailable" type="byte" visibility="public" enum="true" 2720 typedef="boolean" hwlevel="legacy"> 2721 <enum> 2722 <value>FALSE</value> 2723 <value>TRUE</value> 2724 </enum> 2725 <description>Whether the camera device supports android.control.awbLock</description> 2726 <details> 2727 Devices with MANUAL_POST_PROCESSING capability or BURST_CAPTURE capability will 2728 always list `true`. This includes FULL devices. 2729 </details> 2730 <tag id="BC"/> 2731 </entry> 2732 <entry name="availableModes" type="byte" visibility="public" 2733 type_notes="List of enums (android.control.mode)." container="array" 2734 typedef="enumList" hwlevel="legacy"> 2735 <array> 2736 <size>n</size> 2737 </array> 2738 <description> 2739 List of control modes for android.control.mode that are supported by this camera 2740 device. 2741 </description> 2742 <range>Any value listed in android.control.mode</range> 2743 <details> 2744 This list contains control modes that can be set for the camera device. 2745 LEGACY mode devices will always support AUTO mode. LIMITED and FULL 2746 devices will always support OFF, AUTO modes. 2747 </details> 2748 </entry> 2749 <entry name="postRawSensitivityBoostRange" type="int32" visibility="public" 2750 type_notes="Range of supported post RAW sensitivitiy boosts" 2751 container="array" typedef="rangeInt"> 2752 <array> 2753 <size>2</size> 2754 </array> 2755 <description>Range of boosts for android.control.postRawSensitivityBoost supported 2756 by this camera device. 2757 </description> 2758 <units>ISO arithmetic units, the same as android.sensor.sensitivity</units> 2759 <details> 2760 Devices support post RAW sensitivity boost will advertise 2761 android.control.postRawSensitivityBoost key for controling 2762 post RAW sensitivity boost. 2763 2764 This key will be `null` for devices that do not support any RAW format 2765 outputs. For devices that do support RAW format outputs, this key will always 2766 present, and if a device does not support post RAW sensitivity boost, it will 2767 list `(100, 100)` in this key. 2768 </details> 2769 <hal_details> 2770 This key is added in HAL3.4. For HAL3.3 or earlier devices, camera framework will 2771 generate this key as `(100, 100)` if device supports any of RAW output formats. 2772 All HAL3.4 and above devices should list this key if device supports any of RAW 2773 output formats. 2774 </hal_details> 2775 </entry> 2776 </static> 2777 <controls> 2778 <entry name="postRawSensitivityBoost" type="int32" visibility="public"> 2779 <description>The amount of additional sensitivity boost applied to output images 2780 after RAW sensor data is captured. 2781 </description> 2782 <units>ISO arithmetic units, the same as android.sensor.sensitivity</units> 2783 <range>android.control.postRawSensitivityBoostRange</range> 2784 <details> 2785 Some camera devices support additional digital sensitivity boosting in the 2786 camera processing pipeline after sensor RAW image is captured. 2787 Such a boost will be applied to YUV/JPEG format output images but will not 2788 have effect on RAW output formats like RAW_SENSOR, RAW10, RAW12 or RAW_OPAQUE. 2789 2790 This key will be `null` for devices that do not support any RAW format 2791 outputs. For devices that do support RAW format outputs, this key will always 2792 present, and if a device does not support post RAW sensitivity boost, it will 2793 list `100` in this key. 2794 2795 If the camera device cannot apply the exact boost requested, it will reduce the 2796 boost to the nearest supported value. 2797 The final boost value used will be available in the output capture result. 2798 2799 For devices that support post RAW sensitivity boost, the YUV/JPEG output images 2800 of such device will have the total sensitivity of 2801 `android.sensor.sensitivity * android.control.postRawSensitivityBoost / 100` 2802 The sensitivity of RAW format images will always be `android.sensor.sensitivity` 2803 2804 This control is only effective if android.control.aeMode or android.control.mode is set to 2805 OFF; otherwise the auto-exposure algorithm will override this value. 2806 </details> 2807 </entry> 2808 </controls> 2809 <dynamic> 2810 <clone entry="android.control.postRawSensitivityBoost" kind="controls"> 2811 </clone> 2812 </dynamic> 2813 <controls> 2814 <entry name="enableZsl" type="byte" visibility="public" enum="true" typedef="boolean"> 2815 <enum> 2816 <value>FALSE 2817 <notes>Requests with android.control.captureIntent == STILL_CAPTURE must be captured 2818 after previous requests.</notes></value> 2819 <value>TRUE 2820 <notes>Requests with android.control.captureIntent == STILL_CAPTURE may or may not be 2821 captured before previous requests.</notes></value> 2822 </enum> 2823 <description>Allow camera device to enable zero-shutter-lag mode for requests with 2824 android.control.captureIntent == STILL_CAPTURE. 2825 </description> 2826 <details> 2827 If enableZsl is `true`, the camera device may enable zero-shutter-lag mode for requests with 2828 STILL_CAPTURE capture intent. The camera device may use images captured in the past to 2829 produce output images for a zero-shutter-lag request. The result metadata including the 2830 android.sensor.timestamp reflects the source frames used to produce output images. 2831 Therefore, the contents of the output images and the result metadata may be out of order 2832 compared to previous regular requests. enableZsl does not affect requests with other 2833 capture intents. 2834 2835 For example, when requests are submitted in the following order: 2836 Request A: enableZsl is `true`, android.control.captureIntent is PREVIEW 2837 Request B: enableZsl is `true`, android.control.captureIntent is STILL_CAPTURE 2838 2839 The output images for request B may have contents captured before the output images for 2840 request A, and the result metadata for request B may be older than the result metadata for 2841 request A. 2842 2843 Note that when enableZsl is `true`, it is not guaranteed to get output images captured in the 2844 past for requests with STILL_CAPTURE capture intent. 2845 2846 For applications targeting SDK versions O and newer, the value of enableZsl in 2847 TEMPLATE_STILL_CAPTURE template may be `true`. The value in other templates is always 2848 `false` if present. 2849 2850 For applications targeting SDK versions older than O, the value of enableZsl in all 2851 capture templates is always `false` if present. 2852 2853 For application-operated ZSL, use CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template. 2854 </details> 2855 <hal_details> 2856 It is valid for HAL to produce regular output images for requests with STILL_CAPTURE 2857 capture intent. 2858 </hal_details> 2859 </entry> 2860 </controls> 2861 <dynamic> 2862 <clone entry="android.control.enableZsl" kind="controls"> 2863 </clone> 2864 </dynamic> 2865 </section> 2866 <section name="demosaic"> 2867 <controls> 2868 <entry name="mode" type="byte" enum="true"> 2869 <enum> 2870 <value>FAST 2871 <notes>Minimal or no slowdown of frame rate compared to 2872 Bayer RAW output.</notes></value> 2873 <value>HIGH_QUALITY 2874 <notes>Improved processing quality but the frame rate might be slowed down 2875 relative to raw output.</notes></value> 2876 </enum> 2877 <description>Controls the quality of the demosaicing 2878 processing.</description> 2879 <tag id="FUTURE" /> 2880 </entry> 2881 </controls> 2882 </section> 2883 <section name="edge"> 2884 <controls> 2885 <entry name="mode" type="byte" visibility="public" enum="true" hwlevel="full"> 2886 <enum> 2887 <value>OFF 2888 <notes>No edge enhancement is applied.</notes></value> 2889 <value>FAST 2890 <notes>Apply edge enhancement at a quality level that does not slow down frame rate 2891 relative to sensor output. It may be the same as OFF if edge enhancement will 2892 slow down frame rate relative to sensor.</notes></value> 2893 <value>HIGH_QUALITY 2894 <notes>Apply high-quality edge enhancement, at a cost of possibly reduced output frame rate. 2895 </notes></value> 2896 <value optional="true">ZERO_SHUTTER_LAG 2897 <notes>Edge enhancement is applied at different levels for different output streams, 2898 based on resolution. Streams at maximum recording resolution (see {@link 2899 ACameraDevice_createCaptureSession}) or below have 2900 edge enhancement applied, while higher-resolution streams have no edge enhancement 2901 applied. The level of edge enhancement for low-resolution streams is tuned so that 2902 frame rate is not impacted, and the quality is equal to or better than FAST (since it 2903 is only applied to lower-resolution outputs, quality may improve from FAST). 2904 2905 This mode is intended to be used by applications operating in a zero-shutter-lag mode 2906 with YUV or PRIVATE reprocessing, where the application continuously captures 2907 high-resolution intermediate buffers into a circular buffer, from which a final image is 2908 produced via reprocessing when a user takes a picture. For such a use case, the 2909 high-resolution buffers must not have edge enhancement applied to maximize efficiency of 2910 preview and to avoid double-applying enhancement when reprocessed, while low-resolution 2911 buffers (used for recording or preview, generally) need edge enhancement applied for 2912 reasonable preview quality. 2913 2914 This mode is guaranteed to be supported by devices that support either the 2915 YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities 2916 (android.request.availableCapabilities lists either of those capabilities) and it will 2917 be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template. 2918 </notes></value> 2919 </enum> 2920 <description>Operation mode for edge 2921 enhancement.</description> 2922 <range>android.edge.availableEdgeModes</range> 2923 <details>Edge enhancement improves sharpness and details in the captured image. OFF means 2924 no enhancement will be applied by the camera device. 2925 2926 FAST/HIGH_QUALITY both mean camera device determined enhancement 2927 will be applied. HIGH_QUALITY mode indicates that the 2928 camera device will use the highest-quality enhancement algorithms, 2929 even if it slows down capture rate. FAST means the camera device will 2930 not slow down capture rate when applying edge enhancement. FAST may be the same as OFF if 2931 edge enhancement will slow down capture rate. Every output stream will have a similar 2932 amount of enhancement applied. 2933 2934 ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular 2935 buffer of high-resolution images during preview and reprocess image(s) from that buffer 2936 into a final capture when triggered by the user. In this mode, the camera device applies 2937 edge enhancement to low-resolution streams (below maximum recording resolution) to 2938 maximize preview quality, but does not apply edge enhancement to high-resolution streams, 2939 since those will be reprocessed later if necessary. 2940 2941 For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera 2942 device will apply FAST/HIGH_QUALITY YUV-domain edge enhancement, respectively. 2943 The camera device may adjust its internal edge enhancement parameters for best 2944 image quality based on the android.reprocess.effectiveExposureFactor, if it is set. 2945 </details> 2946 <hal_details> 2947 For YUV_REPROCESSING The HAL can use android.reprocess.effectiveExposureFactor to 2948 adjust the internal edge enhancement reduction parameters appropriately to get the best 2949 quality images. 2950 </hal_details> 2951 <tag id="V1" /> 2952 <tag id="REPROC" /> 2953 </entry> 2954 <entry name="strength" type="byte"> 2955 <description>Control the amount of edge enhancement 2956 applied to the images</description> 2957 <units>1-10; 10 is maximum sharpening</units> 2958 <tag id="FUTURE" /> 2959 </entry> 2960 </controls> 2961 <static> 2962 <entry name="availableEdgeModes" type="byte" visibility="public" 2963 type_notes="list of enums" container="array" typedef="enumList" 2964 hwlevel="full"> 2965 <array> 2966 <size>n</size> 2967 </array> 2968 <description> 2969 List of edge enhancement modes for android.edge.mode that are supported by this camera 2970 device. 2971 </description> 2972 <range>Any value listed in android.edge.mode</range> 2973 <details> 2974 Full-capability camera devices must always support OFF; camera devices that support 2975 YUV_REPROCESSING or PRIVATE_REPROCESSING will list ZERO_SHUTTER_LAG; all devices will 2976 list FAST. 2977 </details> 2978 <hal_details> 2979 HAL must support both FAST and HIGH_QUALITY if edge enhancement control is available 2980 on the camera device, but the underlying implementation can be the same for both modes. 2981 That is, if the highest quality implementation on the camera device does not slow down 2982 capture rate, then FAST and HIGH_QUALITY will generate the same output. 2983 </hal_details> 2984 <tag id="V1" /> 2985 <tag id="REPROC" /> 2986 </entry> 2987 </static> 2988 <dynamic> 2989 <clone entry="android.edge.mode" kind="controls"> 2990 <tag id="V1" /> 2991 <tag id="REPROC" /> 2992 </clone> 2993 </dynamic> 2994 </section> 2995 <section name="flash"> 2996 <controls> 2997 <entry name="firingPower" type="byte"> 2998 <description>Power for flash firing/torch</description> 2999 <units>10 is max power; 0 is no flash. Linear</units> 3000 <range>0 - 10</range> 3001 <details>Power for snapshot may use a different scale than 3002 for torch mode. Only one entry for torch mode will be 3003 used</details> 3004 <tag id="FUTURE" /> 3005 </entry> 3006 <entry name="firingTime" type="int64"> 3007 <description>Firing time of flash relative to start of 3008 exposure</description> 3009 <units>nanoseconds</units> 3010 <range>0-(exposure time-flash duration)</range> 3011 <details>Clamped to (0, exposure time - flash 3012 duration).</details> 3013 <tag id="FUTURE" /> 3014 </entry> 3015 <entry name="mode" type="byte" visibility="public" enum="true" hwlevel="legacy"> 3016 <enum> 3017 <value>OFF 3018 <notes> 3019 Do not fire the flash for this capture. 3020 </notes> 3021 </value> 3022 <value>SINGLE 3023 <notes> 3024 If the flash is available and charged, fire flash 3025 for this capture. 3026 </notes> 3027 </value> 3028 <value>TORCH 3029 <notes> 3030 Transition flash to continuously on. 3031 </notes> 3032 </value> 3033 </enum> 3034 <description>The desired mode for for the camera device's flash control.</description> 3035 <details> 3036 This control is only effective when flash unit is available 3037 (`android.flash.info.available == true`). 3038 3039 When this control is used, the android.control.aeMode must be set to ON or OFF. 3040 Otherwise, the camera device auto-exposure related flash control (ON_AUTO_FLASH, 3041 ON_ALWAYS_FLASH, or ON_AUTO_FLASH_REDEYE) will override this control. 3042 3043 When set to OFF, the camera device will not fire flash for this capture. 3044 3045 When set to SINGLE, the camera device will fire flash regardless of the camera 3046 device's auto-exposure routine's result. When used in still capture case, this 3047 control should be used along with auto-exposure (AE) precapture metering sequence 3048 (android.control.aePrecaptureTrigger), otherwise, the image may be incorrectly exposed. 3049 3050 When set to TORCH, the flash will be on continuously. This mode can be used 3051 for use cases such as preview, auto-focus assist, still capture, or video recording. 3052 3053 The flash status will be reported by android.flash.state in the capture result metadata. 3054 </details> 3055 <tag id="BC" /> 3056 </entry> 3057 </controls> 3058 <static> 3059 <namespace name="info"> 3060 <entry name="available" type="byte" visibility="public" enum="true" 3061 typedef="boolean" hwlevel="legacy"> 3062 <enum> 3063 <value>FALSE</value> 3064 <value>TRUE</value> 3065 </enum> 3066 <description>Whether this camera device has a 3067 flash unit.</description> 3068 <details> 3069 Will be `false` if no flash is available. 3070 3071 If there is no flash unit, none of the flash controls do 3072 anything.</details> 3073 <tag id="BC" /> 3074 </entry> 3075 <entry name="chargeDuration" type="int64"> 3076 <description>Time taken before flash can fire 3077 again</description> 3078 <units>nanoseconds</units> 3079 <range>0-1e9</range> 3080 <details>1 second too long/too short for recharge? Should 3081 this be power-dependent?</details> 3082 <tag id="FUTURE" /> 3083 </entry> 3084 </namespace> 3085 <entry name="colorTemperature" type="byte"> 3086 <description>The x,y whitepoint of the 3087 flash</description> 3088 <units>pair of floats</units> 3089 <range>0-1 for both</range> 3090 <tag id="FUTURE" /> 3091 </entry> 3092 <entry name="maxEnergy" type="byte"> 3093 <description>Max energy output of the flash for a full 3094 power single flash</description> 3095 <units>lumen-seconds</units> 3096 <range>&gt;= 0</range> 3097 <tag id="FUTURE" /> 3098 </entry> 3099 </static> 3100 <dynamic> 3101 <clone entry="android.flash.firingPower" kind="controls"> 3102 </clone> 3103 <clone entry="android.flash.firingTime" kind="controls"> 3104 </clone> 3105 <clone entry="android.flash.mode" kind="controls"></clone> 3106 <entry name="state" type="byte" visibility="public" enum="true" 3107 hwlevel="limited"> 3108 <enum> 3109 <value>UNAVAILABLE 3110 <notes>No flash on camera.</notes></value> 3111 <value>CHARGING 3112 <notes>Flash is charging and cannot be fired.</notes></value> 3113 <value>READY 3114 <notes>Flash is ready to fire.</notes></value> 3115 <value>FIRED 3116 <notes>Flash fired for this capture.</notes></value> 3117 <value>PARTIAL 3118 <notes>Flash partially illuminated this frame. 3119 3120 This is usually due to the next or previous frame having 3121 the flash fire, and the flash spilling into this capture 3122 due to hardware limitations.</notes></value> 3123 </enum> 3124 <description>Current state of the flash 3125 unit.</description> 3126 <details> 3127 When the camera device doesn't have flash unit 3128 (i.e. `android.flash.info.available == false`), this state will always be UNAVAILABLE. 3129 Other states indicate the current flash status. 3130 3131 In certain conditions, this will be available on LEGACY devices: 3132 3133 * Flash-less cameras always return UNAVAILABLE. 3134 * Using android.control.aeMode `==` ON_ALWAYS_FLASH 3135 will always return FIRED. 3136 * Using android.flash.mode `==` TORCH 3137 will always return FIRED. 3138 3139 In all other conditions the state will not be available on 3140 LEGACY devices (i.e. it will be `null`). 3141 </details> 3142 </entry> 3143 </dynamic> 3144 </section> 3145 <section name="hotPixel"> 3146 <controls> 3147 <entry name="mode" type="byte" visibility="public" enum="true"> 3148 <enum> 3149 <value>OFF 3150 <notes> 3151 No hot pixel correction is applied. 3152 3153 The frame rate must not be reduced relative to sensor raw output 3154 for this option. 3155 3156 The hotpixel map may be returned in android.statistics.hotPixelMap. 3157 </notes> 3158 </value> 3159 <value>FAST 3160 <notes> 3161 Hot pixel correction is applied, without reducing frame 3162 rate relative to sensor raw output. 3163 3164 The hotpixel map may be returned in android.statistics.hotPixelMap. 3165 </notes> 3166 </value> 3167 <value>HIGH_QUALITY 3168 <notes> 3169 High-quality hot pixel correction is applied, at a cost 3170 of possibly reduced frame rate relative to sensor raw output. 3171 3172 The hotpixel map may be returned in android.statistics.hotPixelMap. 3173 </notes> 3174 </value> 3175 </enum> 3176 <description> 3177 Operational mode for hot pixel correction. 3178 </description> 3179 <range>android.hotPixel.availableHotPixelModes</range> 3180 <details> 3181 Hotpixel correction interpolates out, or otherwise removes, pixels 3182 that do not accurately measure the incoming light (i.e. pixels that 3183 are stuck at an arbitrary value or are oversensitive). 3184 </details> 3185 <tag id="V1" /> 3186 <tag id="RAW" /> 3187 </entry> 3188 </controls> 3189 <static> 3190 <entry name="availableHotPixelModes" type="byte" visibility="public" 3191 type_notes="list of enums" container="array" typedef="enumList"> 3192 <array> 3193 <size>n</size> 3194 </array> 3195 <description> 3196 List of hot pixel correction modes for android.hotPixel.mode that are supported by this 3197 camera device. 3198 </description> 3199 <range>Any value listed in android.hotPixel.mode</range> 3200 <details> 3201 FULL mode camera devices will always support FAST. 3202 </details> 3203 <hal_details> 3204 To avoid performance issues, there will be significantly fewer hot 3205 pixels than actual pixels on the camera sensor. 3206 HAL must support both FAST and HIGH_QUALITY if hot pixel correction control is available 3207 on the camera device, but the underlying implementation can be the same for both modes. 3208 That is, if the highest quality implementation on the camera device does not slow down 3209 capture rate, then FAST and HIGH_QUALITY will generate the same output. 3210 </hal_details> 3211 <tag id="V1" /> 3212 <tag id="RAW" /> 3213 </entry> 3214 </static> 3215 <dynamic> 3216 <clone entry="android.hotPixel.mode" kind="controls"> 3217 <tag id="V1" /> 3218 <tag id="RAW" /> 3219 </clone> 3220 </dynamic> 3221 </section> 3222 <section name="jpeg"> 3223 <controls> 3224 <entry name="gpsLocation" type="byte" visibility="java_public" synthetic="true" 3225 typedef="location" hwlevel="legacy"> 3226 <description> 3227 A location object to use when generating image GPS metadata. 3228 </description> 3229 <details> 3230 Setting a location object in a request will include the GPS coordinates of the location 3231 into any JPEG images captured based on the request. These coordinates can then be 3232 viewed by anyone who receives the JPEG image. 3233 </details> 3234 </entry> 3235 <entry name="gpsCoordinates" type="double" visibility="ndk_public" 3236 type_notes="latitude, longitude, altitude. First two in degrees, the third in meters" 3237 container="array" hwlevel="legacy"> 3238 <array> 3239 <size>3</size> 3240 </array> 3241 <description>GPS coordinates to include in output JPEG 3242 EXIF.</description> 3243 <range>(-180 - 180], [-90,90], [-inf, inf]</range> 3244 <tag id="BC" /> 3245 </entry> 3246 <entry name="gpsProcessingMethod" type="byte" visibility="ndk_public" 3247 typedef="string" hwlevel="legacy"> 3248 <description>32 characters describing GPS algorithm to 3249 include in EXIF.</description> 3250 <units>UTF-8 null-terminated string</units> 3251 <tag id="BC" /> 3252 </entry> 3253 <entry name="gpsTimestamp" type="int64" visibility="ndk_public" hwlevel="legacy"> 3254 <description>Time GPS fix was made to include in 3255 EXIF.</description> 3256 <units>UTC in seconds since January 1, 1970</units> 3257 <tag id="BC" /> 3258 </entry> 3259 <entry name="orientation" type="int32" visibility="public" hwlevel="legacy"> 3260 <description>The orientation for a JPEG image.</description> 3261 <units>Degrees in multiples of 90</units> 3262 <range>0, 90, 180, 270</range> 3263 <details> 3264 The clockwise rotation angle in degrees, relative to the orientation 3265 to the camera, that the JPEG picture needs to be rotated by, to be viewed 3266 upright. 3267 3268 Camera devices may either encode this value into the JPEG EXIF header, or 3269 rotate the image data to match this orientation. When the image data is rotated, 3270 the thumbnail data will also be rotated. 3271 3272 Note that this orientation is relative to the orientation of the camera sensor, given 3273 by android.sensor.orientation. 3274 3275 To translate from the device orientation given by the Android sensor APIs, the following 3276 sample code may be used: 3277 3278 private int getJpegOrientation(CameraCharacteristics c, int deviceOrientation) { 3279 if (deviceOrientation == android.view.OrientationEventListener.ORIENTATION_UNKNOWN) return 0; 3280 int sensorOrientation = c.get(CameraCharacteristics.SENSOR_ORIENTATION); 3281 3282 // Round device orientation to a multiple of 90 3283 deviceOrientation = (deviceOrientation + 45) / 90 * 90; 3284 3285 // Reverse device orientation for front-facing cameras 3286 boolean facingFront = c.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT; 3287 if (facingFront) deviceOrientation = -deviceOrientation; 3288 3289 // Calculate desired JPEG orientation relative to camera orientation to make 3290 // the image upright relative to the device orientation 3291 int jpegOrientation = (sensorOrientation + deviceOrientation + 360) % 360; 3292 3293 return jpegOrientation; 3294 } 3295 </details> 3296 <tag id="BC" /> 3297 </entry> 3298 <entry name="quality" type="byte" visibility="public" hwlevel="legacy"> 3299 <description>Compression quality of the final JPEG 3300 image.</description> 3301 <range>1-100; larger is higher quality</range> 3302 <details>85-95 is typical usage range.</details> 3303 <tag id="BC" /> 3304 </entry> 3305 <entry name="thumbnailQuality" type="byte" visibility="public" hwlevel="legacy"> 3306 <description>Compression quality of JPEG 3307 thumbnail.</description> 3308 <range>1-100; larger is higher quality</range> 3309 <tag id="BC" /> 3310 </entry> 3311 <entry name="thumbnailSize" type="int32" visibility="public" 3312 container="array" typedef="size" hwlevel="legacy"> 3313 <array> 3314 <size>2</size> 3315 </array> 3316 <description>Resolution of embedded JPEG thumbnail.</description> 3317 <range>android.jpeg.availableThumbnailSizes</range> 3318 <details>When set to (0, 0) value, the JPEG EXIF will not contain thumbnail, 3319 but the captured JPEG will still be a valid image. 3320 3321 For best results, when issuing a request for a JPEG image, the thumbnail size selected 3322 should have the same aspect ratio as the main JPEG output. 3323 3324 If the thumbnail image aspect ratio differs from the JPEG primary image aspect 3325 ratio, the camera device creates the thumbnail by cropping it from the primary image. 3326 For example, if the primary image has 4:3 aspect ratio, the thumbnail image has 3327 16:9 aspect ratio, the primary image will be cropped vertically (letterbox) to 3328 generate the thumbnail image. The thumbnail image will always have a smaller Field 3329 Of View (FOV) than the primary image when aspect ratios differ. 3330 3331 When an android.jpeg.orientation of non-zero degree is requested, 3332 the camera device will handle thumbnail rotation in one of the following ways: 3333 3334 * Set the 3335 [EXIF orientation flag](https://developer.android.com/reference/android/media/ExifInterface.html#TAG_ORIENTATION) 3336 and keep jpeg and thumbnail image data unrotated. 3337 * Rotate the jpeg and thumbnail image data and not set 3338 [EXIF orientation flag](https://developer.android.com/reference/android/media/ExifInterface.html#TAG_ORIENTATION). 3339 In this case, LIMITED or FULL hardware level devices will report rotated thumnail size 3340 in capture result, so the width and height will be interchanged if 90 or 270 degree 3341 orientation is requested. LEGACY device will always report unrotated thumbnail size. 3342 </details> 3343 <hal_details> 3344 The HAL must not squeeze or stretch the downscaled primary image to generate thumbnail. 3345 The cropping must be done on the primary jpeg image rather than the sensor active array. 3346 The stream cropping rule specified by "S5. Cropping" in camera3.h doesn't apply to the 3347 thumbnail image cropping. 3348 </hal_details> 3349 <tag id="BC" /> 3350 </entry> 3351 </controls> 3352 <static> 3353 <entry name="availableThumbnailSizes" type="int32" visibility="public" 3354 container="array" typedef="size" hwlevel="legacy"> 3355 <array> 3356 <size>2</size> 3357 <size>n</size> 3358 </array> 3359 <description>List of JPEG thumbnail sizes for android.jpeg.thumbnailSize supported by this 3360 camera device.</description> 3361 <details> 3362 This list will include at least one non-zero resolution, plus `(0,0)` for indicating no 3363 thumbnail should be generated. 3364 3365 Below condiditions will be satisfied for this size list: 3366 3367 * The sizes will be sorted by increasing pixel area (width x height). 3368 If several resolutions have the same area, they will be sorted by increasing width. 3369 * The aspect ratio of the largest thumbnail size will be same as the 3370 aspect ratio of largest JPEG output size in android.scaler.availableStreamConfigurations. 3371 The largest size is defined as the size that has the largest pixel area 3372 in a given size list. 3373 * Each output JPEG size in android.scaler.availableStreamConfigurations will have at least 3374 one corresponding size that has the same aspect ratio in availableThumbnailSizes, 3375 and vice versa. 3376 * All non-`(0, 0)` sizes will have non-zero widths and heights.</details> 3377 <tag id="BC" /> 3378 </entry> 3379 <entry name="maxSize" type="int32" visibility="system"> 3380 <description>Maximum size in bytes for the compressed 3381 JPEG buffer</description> 3382 <range>Must be large enough to fit any JPEG produced by 3383 the camera</range> 3384 <details>This is used for sizing the gralloc buffers for 3385 JPEG</details> 3386 </entry> 3387 </static> 3388 <dynamic> 3389 <clone entry="android.jpeg.gpsLocation" kind="controls"> 3390 </clone> 3391 <clone entry="android.jpeg.gpsCoordinates" kind="controls"> 3392 </clone> 3393 <clone entry="android.jpeg.gpsProcessingMethod" 3394 kind="controls"></clone> 3395 <clone entry="android.jpeg.gpsTimestamp" kind="controls"> 3396 </clone> 3397 <clone entry="android.jpeg.orientation" kind="controls"> 3398 </clone> 3399 <clone entry="android.jpeg.quality" kind="controls"> 3400 </clone> 3401 <entry name="size" type="int32"> 3402 <description>The size of the compressed JPEG image, in 3403 bytes</description> 3404 <range>&gt;= 0</range> 3405 <details>If no JPEG output is produced for the request, 3406 this must be 0. 3407 3408 Otherwise, this describes the real size of the compressed 3409 JPEG image placed in the output stream. More specifically, 3410 if android.jpeg.maxSize = 1000000, and a specific capture 3411 has android.jpeg.size = 500000, then the output buffer from 3412 the JPEG stream will be 1000000 bytes, of which the first 3413 500000 make up the real data.</details> 3414 <tag id="FUTURE" /> 3415 </entry> 3416 <clone entry="android.jpeg.thumbnailQuality" 3417 kind="controls"></clone> 3418 <clone entry="android.jpeg.thumbnailSize" kind="controls"> 3419 </clone> 3420 </dynamic> 3421 </section> 3422 <section name="lens"> 3423 <controls> 3424 <entry name="aperture" type="float" visibility="public" hwlevel="full"> 3425 <description>The desired lens aperture size, as a ratio of lens focal length to the 3426 effective aperture diameter.</description> 3427 <units>The f-number (f/N)</units> 3428 <range>android.lens.info.availableApertures</range> 3429 <details>Setting this value is only supported on the camera devices that have a variable 3430 aperture lens. 3431 3432 When this is supported and android.control.aeMode is OFF, 3433 this can be set along with android.sensor.exposureTime, 3434 android.sensor.sensitivity, and android.sensor.frameDuration 3435 to achieve manual exposure control. 3436 3437 The requested aperture value may take several frames to reach the 3438 requested value; the camera device will report the current (intermediate) 3439 aperture size in capture result metadata while the aperture is changing. 3440 While the aperture is still changing, android.lens.state will be set to MOVING. 3441 3442 When this is supported and android.control.aeMode is one of 3443 the ON modes, this will be overridden by the camera device 3444 auto-exposure algorithm, the overridden values are then provided 3445 back to the user in the corresponding result.</details> 3446 <tag id="V1" /> 3447 </entry> 3448 <entry name="filterDensity" type="float" visibility="public" hwlevel="full"> 3449 <description> 3450 The desired setting for the lens neutral density filter(s). 3451 </description> 3452 <units>Exposure Value (EV)</units> 3453 <range>android.lens.info.availableFilterDensities</range> 3454 <details> 3455 This control will not be supported on most camera devices. 3456 3457 Lens filters are typically used to lower the amount of light the 3458 sensor is exposed to (measured in steps of EV). As used here, an EV 3459 step is the standard logarithmic representation, which are 3460 non-negative, and inversely proportional to the amount of light 3461 hitting the sensor. For example, setting this to 0 would result 3462 in no reduction of the incoming light, and setting this to 2 would 3463 mean that the filter is set to reduce incoming light by two stops 3464 (allowing 1/4 of the prior amount of light to the sensor). 3465 3466 It may take several frames before the lens filter density changes 3467 to the requested value. While the filter density is still changing, 3468 android.lens.state will be set to MOVING. 3469 </details> 3470 <tag id="V1" /> 3471 </entry> 3472 <entry name="focalLength" type="float" visibility="public" hwlevel="legacy"> 3473 <description> 3474 The desired lens focal length; used for optical zoom. 3475 </description> 3476 <units>Millimeters</units> 3477 <range>android.lens.info.availableFocalLengths</range> 3478 <details> 3479 This setting controls the physical focal length of the camera 3480 device's lens. Changing the focal length changes the field of 3481 view of the camera device, and is usually used for optical zoom. 3482 3483 Like android.lens.focusDistance and android.lens.aperture, this 3484 setting won't be applied instantaneously, and it may take several 3485 frames before the lens can change to the requested focal length. 3486 While the focal length is still changing, android.lens.state will 3487 be set to MOVING. 3488 3489 Optical zoom will not be supported on most devices. 3490 </details> 3491 <tag id="V1" /> 3492 </entry> 3493 <entry name="focusDistance" type="float" visibility="public" hwlevel="full"> 3494 <description>Desired distance to plane of sharpest focus, 3495 measured from frontmost surface of the lens.</description> 3496 <units>See android.lens.info.focusDistanceCalibration for details</units> 3497 <range>&gt;= 0</range> 3498 <details> 3499 This control can be used for setting manual focus, on devices that support 3500 the MANUAL_SENSOR capability and have a variable-focus lens (see 3501 android.lens.info.minimumFocusDistance). 3502 3503 A value of `0.0f` means infinity focus. The value set will be clamped to 3504 `[0.0f, android.lens.info.minimumFocusDistance]`. 3505 3506 Like android.lens.focalLength, this setting won't be applied 3507 instantaneously, and it may take several frames before the lens 3508 can move to the requested focus distance. While the lens is still moving, 3509 android.lens.state will be set to MOVING. 3510 3511 LEGACY devices support at most setting this to `0.0f` 3512 for infinity focus. 3513 </details> 3514 <tag id="BC" /> 3515 <tag id="V1" /> 3516 </entry> 3517 <entry name="opticalStabilizationMode" type="byte" visibility="public" 3518 enum="true" hwlevel="limited"> 3519 <enum> 3520 <value>OFF 3521 <notes>Optical stabilization is unavailable.</notes> 3522 </value> 3523 <value optional="true">ON 3524 <notes>Optical stabilization is enabled.</notes> 3525 </value> 3526 </enum> 3527 <description> 3528 Sets whether the camera device uses optical image stabilization (OIS) 3529 when capturing images. 3530 </description> 3531 <range>android.lens.info.availableOpticalStabilization</range> 3532 <details> 3533 OIS is used to compensate for motion blur due to small 3534 movements of the camera during capture. Unlike digital image 3535 stabilization (android.control.videoStabilizationMode), OIS 3536 makes use of mechanical elements to stabilize the camera 3537 sensor, and thus allows for longer exposure times before 3538 camera shake becomes apparent. 3539 3540 Switching between different optical stabilization modes may take several 3541 frames to initialize, the camera device will report the current mode in 3542 capture result metadata. For example, When "ON" mode is requested, the 3543 optical stabilization modes in the first several capture results may still 3544 be "OFF", and it will become "ON" when the initialization is done. 3545 3546 If a camera device supports both OIS and digital image stabilization 3547 (android.control.videoStabilizationMode), turning both modes on may produce undesirable 3548 interaction, so it is recommended not to enable both at the same time. 3549 3550 Not all devices will support OIS; see 3551 android.lens.info.availableOpticalStabilization for 3552 available controls. 3553 </details> 3554 <tag id="V1" /> 3555 </entry> 3556 </controls> 3557 <static> 3558 <namespace name="info"> 3559 <entry name="availableApertures" type="float" visibility="public" 3560 container="array" hwlevel="full"> 3561 <array> 3562 <size>n</size> 3563 </array> 3564 <description>List of aperture size values for android.lens.aperture that are 3565 supported by this camera device.</description> 3566 <units>The aperture f-number</units> 3567 <details>If the camera device doesn't support a variable lens aperture, 3568 this list will contain only one value, which is the fixed aperture size. 3569 3570 If the camera device supports a variable aperture, the aperture values 3571 in this list will be sorted in ascending order.</details> 3572 <tag id="V1" /> 3573 </entry> 3574 <entry name="availableFilterDensities" type="float" visibility="public" 3575 container="array" hwlevel="full"> 3576 <array> 3577 <size>n</size> 3578 </array> 3579 <description> 3580 List of neutral density filter values for 3581 android.lens.filterDensity that are supported by this camera device. 3582 </description> 3583 <units>Exposure value (EV)</units> 3584 <range> 3585 Values are &gt;= 0 3586 </range> 3587 <details> 3588 If a neutral density filter is not supported by this camera device, 3589 this list will contain only 0. Otherwise, this list will include every 3590 filter density supported by the camera device, in ascending order. 3591 </details> 3592 <tag id="V1" /> 3593 </entry> 3594 <entry name="availableFocalLengths" type="float" visibility="public" 3595 type_notes="The list of available focal lengths" 3596 container="array" hwlevel="legacy"> 3597 <array> 3598 <size>n</size> 3599 </array> 3600 <description> 3601 List of focal lengths for android.lens.focalLength that are supported by this camera 3602 device. 3603 </description> 3604 <units>Millimeters</units> 3605 <range> 3606 Values are &gt; 0 3607 </range> 3608 <details> 3609 If optical zoom is not supported, this list will only contain 3610 a single value corresponding to the fixed focal length of the 3611 device. Otherwise, this list will include every focal length supported 3612 by the camera device, in ascending order. 3613 </details> 3614 <tag id="BC" /> 3615 <tag id="V1" /> 3616 </entry> 3617 <entry name="availableOpticalStabilization" type="byte" 3618 visibility="public" type_notes="list of enums" container="array" 3619 typedef="enumList" hwlevel="limited"> 3620 <array> 3621 <size>n</size> 3622 </array> 3623 <description> 3624 List of optical image stabilization (OIS) modes for 3625 android.lens.opticalStabilizationMode that are supported by this camera device. 3626 </description> 3627 <range>Any value listed in android.lens.opticalStabilizationMode</range> 3628 <details> 3629 If OIS is not supported by a given camera device, this list will 3630 contain only OFF. 3631 </details> 3632 <tag id="V1" /> 3633 </entry> 3634 <entry name="hyperfocalDistance" type="float" visibility="public" optional="true" 3635 hwlevel="limited"> 3636 <description>Hyperfocal distance for this lens.</description> 3637 <units>See android.lens.info.focusDistanceCalibration for details</units> 3638 <range>If lens is fixed focus, &gt;= 0. If lens has focuser unit, the value is 3639 within `(0.0f, android.lens.info.minimumFocusDistance]`</range> 3640 <details> 3641 If the lens is not fixed focus, the camera device will report this 3642 field when android.lens.info.focusDistanceCalibration is APPROXIMATE or CALIBRATED. 3643 </details> 3644 </entry> 3645 <entry name="minimumFocusDistance" type="float" visibility="public" optional="true" 3646 hwlevel="limited"> 3647 <description>Shortest distance from frontmost surface 3648 of the lens that can be brought into sharp focus.</description> 3649 <units>See android.lens.info.focusDistanceCalibration for details</units> 3650 <range>&gt;= 0</range> 3651 <details>If the lens is fixed-focus, this will be 3652 0.</details> 3653 <hal_details>Mandatory for FULL devices; LIMITED devices 3654 must always set this value to 0 for fixed-focus; and may omit 3655 the minimum focus distance otherwise. 3656 3657 This field is also mandatory for all devices advertising 3658 the MANUAL_SENSOR capability.</hal_details> 3659 <tag id="V1" /> 3660 </entry> 3661 <entry name="shadingMapSize" type="int32" visibility="ndk_public" 3662 type_notes="width and height (N, M) of lens shading map provided by the camera device." 3663 container="array" typedef="size" hwlevel="full"> 3664 <array> 3665 <size>2</size> 3666 </array> 3667 <description>Dimensions of lens shading map.</description> 3668 <range>Both values &gt;= 1</range> 3669 <details> 3670 The map should be on the order of 30-40 rows and columns, and 3671 must be smaller than 64x64. 3672 </details> 3673 <tag id="V1" /> 3674 </entry> 3675 <entry name="focusDistanceCalibration" type="byte" visibility="public" 3676 enum="true" hwlevel="limited"> 3677 <enum> 3678 <value>UNCALIBRATED 3679 <notes> 3680 The lens focus distance is not accurate, and the units used for 3681 android.lens.focusDistance do not correspond to any physical units. 3682 3683 Setting the lens to the same focus distance on separate occasions may 3684 result in a different real focus distance, depending on factors such 3685 as the orientation of the device, the age of the focusing mechanism, 3686 and the device temperature. The focus distance value will still be 3687 in the range of `[0, android.lens.info.minimumFocusDistance]`, where 0 3688 represents the farthest focus. 3689 </notes> 3690 </value> 3691 <value>APPROXIMATE 3692 <notes> 3693 The lens focus distance is measured in diopters. 3694 3695 However, setting the lens to the same focus distance 3696 on separate occasions may result in a different real 3697 focus distance, depending on factors such as the 3698 orientation of the device, the age of the focusing 3699 mechanism, and the device temperature. 3700 </notes> 3701 </value> 3702 <value>CALIBRATED 3703 <notes> 3704 The lens focus distance is measured in diopters, and 3705 is calibrated. 3706 3707 The lens mechanism is calibrated so that setting the 3708 same focus distance is repeatable on multiple 3709 occasions with good accuracy, and the focus distance 3710 corresponds to the real physical distance to the plane 3711 of best focus. 3712 </notes> 3713 </value> 3714 </enum> 3715 <description>The lens focus distance calibration quality.</description> 3716 <details> 3717 The lens focus distance calibration quality determines the reliability of 3718 focus related metadata entries, i.e. android.lens.focusDistance, 3719 android.lens.focusRange, android.lens.info.hyperfocalDistance, and 3720 android.lens.info.minimumFocusDistance. 3721 3722 APPROXIMATE and CALIBRATED devices report the focus metadata in 3723 units of diopters (1/meter), so `0.0f` represents focusing at infinity, 3724 and increasing positive numbers represent focusing closer and closer 3725 to the camera device. The focus distance control also uses diopters 3726 on these devices. 3727 3728 UNCALIBRATED devices do not use units that are directly comparable 3729 to any real physical measurement, but `0.0f` still represents farthest 3730 focus, and android.lens.info.minimumFocusDistance represents the 3731 nearest focus the device can achieve. 3732 </details> 3733 <hal_details> 3734 For devices advertise APPROXIMATE quality or higher, diopters 0 (infinity 3735 focus) must work. When autofocus is disabled (android.control.afMode == OFF) 3736 and the lens focus distance is set to 0 diopters 3737 (android.lens.focusDistance == 0), the lens will move to focus at infinity 3738 and is stably focused at infinity even if the device tilts. It may take the 3739 lens some time to move; during the move the lens state should be MOVING and 3740 the output diopter value should be changing toward 0. 3741 </hal_details> 3742 <tag id="V1" /> 3743 </entry> 3744 </namespace> 3745 <entry name="facing" type="byte" visibility="public" enum="true" hwlevel="legacy"> 3746 <enum> 3747 <value>FRONT 3748 <notes> 3749 The camera device faces the same direction as the device's screen. 3750 </notes></value> 3751 <value>BACK 3752 <notes> 3753 The camera device faces the opposite direction as the device's screen. 3754 </notes></value> 3755 <value>EXTERNAL 3756 <notes> 3757 The camera device is an external camera, and has no fixed facing relative to the 3758 device's screen. 3759 </notes></value> 3760 </enum> 3761 <description>Direction the camera faces relative to 3762 device screen.</description> 3763 </entry> 3764 <entry name="poseRotation" type="float" visibility="public" 3765 container="array"> 3766 <array> 3767 <size>4</size> 3768 </array> 3769 <description> 3770 The orientation of the camera relative to the sensor 3771 coordinate system. 3772 </description> 3773 <units> 3774 Quaternion coefficients 3775 </units> 3776 <details> 3777 The four coefficients that describe the quaternion 3778 rotation from the Android sensor coordinate system to a 3779 camera-aligned coordinate system where the X-axis is 3780 aligned with the long side of the image sensor, the Y-axis 3781 is aligned with the short side of the image sensor, and 3782 the Z-axis is aligned with the optical axis of the sensor. 3783 3784 To convert from the quaternion coefficients `(x,y,z,w)` 3785 to the axis of rotation `(a_x, a_y, a_z)` and rotation 3786 amount `theta`, the following formulas can be used: 3787 3788 theta = 2 * acos(w) 3789 a_x = x / sin(theta/2) 3790 a_y = y / sin(theta/2) 3791 a_z = z / sin(theta/2) 3792 3793 To create a 3x3 rotation matrix that applies the rotation 3794 defined by this quaternion, the following matrix can be 3795 used: 3796 3797 R = [ 1 - 2y^2 - 2z^2, 2xy - 2zw, 2xz + 2yw, 3798 2xy + 2zw, 1 - 2x^2 - 2z^2, 2yz - 2xw, 3799 2xz - 2yw, 2yz + 2xw, 1 - 2x^2 - 2y^2 ] 3800 3801 This matrix can then be used to apply the rotation to a 3802 column vector point with 3803 3804 `p' = Rp` 3805 3806 where `p` is in the device sensor coordinate system, and 3807 `p'` is in the camera-oriented coordinate system. 3808 </details> 3809 <tag id="DEPTH" /> 3810 </entry> 3811 <entry name="poseTranslation" type="float" visibility="public" 3812 container="array"> 3813 <array> 3814 <size>3</size> 3815 </array> 3816 <description>Position of the camera optical center.</description> 3817 <units>Meters</units> 3818 <details> 3819 The position of the camera device's lens optical center, 3820 as a three-dimensional vector `(x,y,z)`, relative to the 3821 optical center of the largest camera device facing in the 3822 same direction as this camera, in the 3823 [Android sensor coordinate axes](https://developer.android.com/reference/android/hardware/SensorEvent.html). 3824 Note that only the axis definitions are shared with 3825 the sensor coordinate system, but not the origin. 3826 3827 If this device is the largest or only camera device with a 3828 given facing, then this position will be `(0, 0, 0)`; a 3829 camera device with a lens optical center located 3 cm from 3830 the main sensor along the +X axis (to the right from the 3831 user's perspective) will report `(0.03, 0, 0)`. 3832 3833 To transform a pixel coordinates between two cameras 3834 facing the same direction, first the source camera 3835 android.lens.radialDistortion must be corrected for. Then 3836 the source camera android.lens.intrinsicCalibration needs 3837 to be applied, followed by the android.lens.poseRotation 3838 of the source camera, the translation of the source camera 3839 relative to the destination camera, the 3840 android.lens.poseRotation of the destination camera, and 3841 finally the inverse of android.lens.intrinsicCalibration 3842 of the destination camera. This obtains a 3843 radial-distortion-free coordinate in the destination 3844 camera pixel coordinates. 3845 3846 To compare this against a real image from the destination 3847 camera, the destination camera image then needs to be 3848 corrected for radial distortion before comparison or 3849 sampling. 3850 </details> 3851 <tag id="DEPTH" /> 3852 </entry> 3853 </static> 3854 <dynamic> 3855 <clone entry="android.lens.aperture" kind="controls"> 3856 <tag id="V1" /> 3857 </clone> 3858 <clone entry="android.lens.filterDensity" kind="controls"> 3859 <tag id="V1" /> 3860 </clone> 3861 <clone entry="android.lens.focalLength" kind="controls"> 3862 <tag id="BC" /> 3863 </clone> 3864 <clone entry="android.lens.focusDistance" kind="controls"> 3865 <details>Should be zero for fixed-focus cameras</details> 3866 <tag id="BC" /> 3867 </clone> 3868 <entry name="focusRange" type="float" visibility="public" 3869 type_notes="Range of scene distances that are in focus" 3870 container="array" typedef="pairFloatFloat" hwlevel="limited"> 3871 <array> 3872 <size>2</size> 3873 </array> 3874 <description>The range of scene distances that are in 3875 sharp focus (depth of field).</description> 3876 <units>A pair of focus distances in diopters: (near, 3877 far); see android.lens.info.focusDistanceCalibration for details.</units> 3878 <range>&gt;=0</range> 3879 <details>If variable focus not supported, can still report 3880 fixed depth of field range</details> 3881 <tag id="BC" /> 3882 </entry> 3883 <clone entry="android.lens.opticalStabilizationMode" 3884 kind="controls"> 3885 <tag id="V1" /> 3886 </clone> 3887 <entry name="state" type="byte" visibility="public" enum="true" hwlevel="limited"> 3888 <enum> 3889 <value>STATIONARY 3890 <notes> 3891 The lens parameters (android.lens.focalLength, android.lens.focusDistance, 3892 android.lens.filterDensity and android.lens.aperture) are not changing. 3893 </notes> 3894 </value> 3895 <value>MOVING 3896 <notes> 3897 One or several of the lens parameters 3898 (android.lens.focalLength, android.lens.focusDistance, 3899 android.lens.filterDensity or android.lens.aperture) is 3900 currently changing. 3901 </notes> 3902 </value> 3903 </enum> 3904 <description>Current lens status.</description> 3905 <details> 3906 For lens parameters android.lens.focalLength, android.lens.focusDistance, 3907 android.lens.filterDensity and android.lens.aperture, when changes are requested, 3908 they may take several frames to reach the requested values. This state indicates 3909 the current status of the lens parameters. 3910 3911 When the state is STATIONARY, the lens parameters are not changing. This could be 3912 either because the parameters are all fixed, or because the lens has had enough 3913 time to reach the most recently-requested values. 3914 If all these lens parameters are not changable for a camera device, as listed below: 3915 3916 * Fixed focus (`android.lens.info.minimumFocusDistance == 0`), which means 3917 android.lens.focusDistance parameter will always be 0. 3918 * Fixed focal length (android.lens.info.availableFocalLengths contains single value), 3919 which means the optical zoom is not supported. 3920 * No ND filter (android.lens.info.availableFilterDensities contains only 0). 3921 * Fixed aperture (android.lens.info.availableApertures contains single value). 3922 3923 Then this state will always be STATIONARY. 3924 3925 When the state is MOVING, it indicates that at least one of the lens parameters 3926 is changing. 3927 </details> 3928 <tag id="V1" /> 3929 </entry> 3930 <clone entry="android.lens.poseRotation" kind="static"> 3931 </clone> 3932 <clone entry="android.lens.poseTranslation" kind="static"> 3933 </clone> 3934 </dynamic> 3935 <static> 3936 <entry name="intrinsicCalibration" type="float" visibility="public" 3937 container="array"> 3938 <array> 3939 <size>5</size> 3940 </array> 3941 <description> 3942 The parameters for this camera device's intrinsic 3943 calibration. 3944 </description> 3945 <units> 3946 Pixels in the 3947 android.sensor.info.preCorrectionActiveArraySize 3948 coordinate system. 3949 </units> 3950 <details> 3951 The five calibration parameters that describe the 3952 transform from camera-centric 3D coordinates to sensor 3953 pixel coordinates: 3954 3955 [f_x, f_y, c_x, c_y, s] 3956 3957 Where `f_x` and `f_y` are the horizontal and vertical 3958 focal lengths, `[c_x, c_y]` is the position of the optical 3959 axis, and `s` is a skew parameter for the sensor plane not 3960 being aligned with the lens plane. 3961 3962 These are typically used within a transformation matrix K: 3963 3964 K = [ f_x, s, c_x, 3965 0, f_y, c_y, 3966 0 0, 1 ] 3967 3968 which can then be combined with the camera pose rotation 3969 `R` and translation `t` (android.lens.poseRotation and 3970 android.lens.poseTranslation, respective) to calculate the 3971 complete transform from world coordinates to pixel 3972 coordinates: 3973 3974 P = [ K 0 * [ R t 3975 0 1 ] 0 1 ] 3976 3977 and with `p_w` being a point in the world coordinate system 3978 and `p_s` being a point in the camera active pixel array 3979 coordinate system, and with the mapping including the 3980 homogeneous division by z: 3981 3982 p_h = (x_h, y_h, z_h) = P p_w 3983 p_s = p_h / z_h 3984 3985 so `[x_s, y_s]` is the pixel coordinates of the world 3986 point, `z_s = 1`, and `w_s` is a measurement of disparity 3987 (depth) in pixel coordinates. 3988 3989 Note that the coordinate system for this transform is the 3990 android.sensor.info.preCorrectionActiveArraySize system, 3991 where `(0,0)` is the top-left of the 3992 preCorrectionActiveArraySize rectangle. Once the pose and 3993 intrinsic calibration transforms have been applied to a 3994 world point, then the android.lens.radialDistortion 3995 transform needs to be applied, and the result adjusted to 3996 be in the android.sensor.info.activeArraySize coordinate 3997 system (where `(0, 0)` is the top-left of the 3998 activeArraySize rectangle), to determine the final pixel 3999 coordinate of the world point for processed (non-RAW) 4000 output buffers. 4001 </details> 4002 <tag id="DEPTH" /> 4003 </entry> 4004 <entry name="radialDistortion" type="float" visibility="public" 4005 container="array"> 4006 <array> 4007 <size>6</size> 4008 </array> 4009 <description> 4010 The correction coefficients to correct for this camera device's 4011 radial and tangential lens distortion. 4012 </description> 4013 <units> 4014 Unitless coefficients. 4015 </units> 4016 <details> 4017 Four radial distortion coefficients `[kappa_0, kappa_1, kappa_2, 4018 kappa_3]` and two tangential distortion coefficients 4019 `[kappa_4, kappa_5]` that can be used to correct the 4020 lens's geometric distortion with the mapping equations: 4021 4022 x_c = x_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) + 4023 kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 ) 4024 y_c = y_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) + 4025 kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 ) 4026 4027 Here, `[x_c, y_c]` are the coordinates to sample in the 4028 input image that correspond to the pixel values in the 4029 corrected image at the coordinate `[x_i, y_i]`: 4030 4031 correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage) 4032 4033 The pixel coordinates are defined in a normalized 4034 coordinate system related to the 4035 android.lens.intrinsicCalibration calibration fields. 4036 Both `[x_i, y_i]` and `[x_c, y_c]` have `(0,0)` at the 4037 lens optical center `[c_x, c_y]`. The maximum magnitudes 4038 of both x and y coordinates are normalized to be 1 at the 4039 edge further from the optical center, so the range 4040 for both dimensions is `-1 <= x <= 1`. 4041 4042 Finally, `r` represents the radial distance from the 4043 optical center, `r^2 = x_i^2 + y_i^2`, and its magnitude 4044 is therefore no larger than `|r| <= sqrt(2)`. 4045 4046 The distortion model used is the Brown-Conrady model. 4047 </details> 4048 <tag id="DEPTH" /> 4049 </entry> 4050 </static> 4051 <dynamic> 4052 <clone entry="android.lens.intrinsicCalibration" kind="static"> 4053 </clone> 4054 <clone entry="android.lens.radialDistortion" kind="static"> 4055 </clone> 4056 </dynamic> 4057 </section> 4058 <section name="noiseReduction"> 4059 <controls> 4060 <entry name="mode" type="byte" visibility="public" enum="true" hwlevel="full"> 4061 <enum> 4062 <value>OFF 4063 <notes>No noise reduction is applied.</notes></value> 4064 <value>FAST 4065 <notes>Noise reduction is applied without reducing frame rate relative to sensor 4066 output. It may be the same as OFF if noise reduction will reduce frame rate 4067 relative to sensor.</notes></value> 4068 <value>HIGH_QUALITY 4069 <notes>High-quality noise reduction is applied, at the cost of possibly reduced frame 4070 rate relative to sensor output.</notes></value> 4071 <value optional="true">MINIMAL 4072 <notes>MINIMAL noise reduction is applied without reducing frame rate relative to 4073 sensor output. </notes></value> 4074 <value optional="true">ZERO_SHUTTER_LAG 4075 4076 <notes>Noise reduction is applied at different levels for different output streams, 4077 based on resolution. Streams at maximum recording resolution (see {@link 4078 ACameraDevice_createCaptureSession}) or below have noise 4079 reduction applied, while higher-resolution streams have MINIMAL (if supported) or no 4080 noise reduction applied (if MINIMAL is not supported.) The degree of noise reduction 4081 for low-resolution streams is tuned so that frame rate is not impacted, and the quality 4082 is equal to or better than FAST (since it is only applied to lower-resolution outputs, 4083 quality may improve from FAST). 4084 4085 This mode is intended to be used by applications operating in a zero-shutter-lag mode 4086 with YUV or PRIVATE reprocessing, where the application continuously captures 4087 high-resolution intermediate buffers into a circular buffer, from which a final image is 4088 produced via reprocessing when a user takes a picture. For such a use case, the 4089 high-resolution buffers must not have noise reduction applied to maximize efficiency of 4090 preview and to avoid over-applying noise filtering when reprocessing, while 4091 low-resolution buffers (used for recording or preview, generally) need noise reduction 4092 applied for reasonable preview quality. 4093 4094 This mode is guaranteed to be supported by devices that support either the 4095 YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities 4096 (android.request.availableCapabilities lists either of those capabilities) and it will 4097 be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template. 4098 </notes></value> 4099 </enum> 4100 <description>Mode of operation for the noise reduction algorithm.</description> 4101 <range>android.noiseReduction.availableNoiseReductionModes</range> 4102 <details>The noise reduction algorithm attempts to improve image quality by removing 4103 excessive noise added by the capture process, especially in dark conditions. 4104 4105 OFF means no noise reduction will be applied by the camera device, for both raw and 4106 YUV domain. 4107 4108 MINIMAL means that only sensor raw domain basic noise reduction is enabled ,to remove 4109 demosaicing or other processing artifacts. For YUV_REPROCESSING, MINIMAL is same as OFF. 4110 This mode is optional, may not be support by all devices. The application should check 4111 android.noiseReduction.availableNoiseReductionModes before using it. 4112 4113 FAST/HIGH_QUALITY both mean camera device determined noise filtering 4114 will be applied. HIGH_QUALITY mode indicates that the camera device 4115 will use the highest-quality noise filtering algorithms, 4116 even if it slows down capture rate. FAST means the camera device will not 4117 slow down capture rate when applying noise filtering. FAST may be the same as MINIMAL if 4118 MINIMAL is listed, or the same as OFF if any noise filtering will slow down capture rate. 4119 Every output stream will have a similar amount of enhancement applied. 4120 4121 ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular 4122 buffer of high-resolution images during preview and reprocess image(s) from that buffer 4123 into a final capture when triggered by the user. In this mode, the camera device applies 4124 noise reduction to low-resolution streams (below maximum recording resolution) to maximize 4125 preview quality, but does not apply noise reduction to high-resolution streams, since 4126 those will be reprocessed later if necessary. 4127 4128 For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera device 4129 will apply FAST/HIGH_QUALITY YUV domain noise reduction, respectively. The camera device 4130 may adjust the noise reduction parameters for best image quality based on the 4131 android.reprocess.effectiveExposureFactor if it is set. 4132 </details> 4133 <hal_details> 4134 For YUV_REPROCESSING The HAL can use android.reprocess.effectiveExposureFactor to 4135 adjust the internal noise reduction parameters appropriately to get the best quality 4136 images. 4137 </hal_details> 4138 <tag id="V1" /> 4139 <tag id="REPROC" /> 4140 </entry> 4141 <entry name="strength" type="byte"> 4142 <description>Control the amount of noise reduction 4143 applied to the images</description> 4144 <units>1-10; 10 is max noise reduction</units> 4145 <range>1 - 10</range> 4146 <tag id="FUTURE" /> 4147 </entry> 4148 </controls> 4149 <static> 4150 <entry name="availableNoiseReductionModes" type="byte" visibility="public" 4151 type_notes="list of enums" container="array" typedef="enumList" hwlevel="limited"> 4152 <array> 4153 <size>n</size> 4154 </array> 4155 <description> 4156 List of noise reduction modes for android.noiseReduction.mode that are supported 4157 by this camera device. 4158 </description> 4159 <range>Any value listed in android.noiseReduction.mode</range> 4160 <details> 4161 Full-capability camera devices will always support OFF and FAST. 4162 4163 Camera devices that support YUV_REPROCESSING or PRIVATE_REPROCESSING will support 4164 ZERO_SHUTTER_LAG. 4165 4166 Legacy-capability camera devices will only support FAST mode. 4167 </details> 4168 <hal_details> 4169 HAL must support both FAST and HIGH_QUALITY if noise reduction control is available 4170 on the camera device, but the underlying implementation can be the same for both modes. 4171 That is, if the highest quality implementation on the camera device does not slow down 4172 capture rate, then FAST and HIGH_QUALITY will generate the same output. 4173 </hal_details> 4174 <tag id="V1" /> 4175 <tag id="REPROC" /> 4176 </entry> 4177 </static> 4178 <dynamic> 4179 <clone entry="android.noiseReduction.mode" kind="controls"> 4180 <tag id="V1" /> 4181 <tag id="REPROC" /> 4182 </clone> 4183 </dynamic> 4184 </section> 4185 <section name="quirks"> 4186 <static> 4187 <entry name="meteringCropRegion" type="byte" visibility="system" deprecated="true" optional="true"> 4188 <description>If set to 1, the camera service does not 4189 scale 'normalized' coordinates with respect to the crop 4190 region. This applies to metering input (a{e,f,wb}Region 4191 and output (face rectangles).</description> 4192 <details>Normalized coordinates refer to those in the 4193 (-1000,1000) range mentioned in the 4194 android.hardware.Camera API. 4195 4196 HAL implementations should instead always use and emit 4197 sensor array-relative coordinates for all region data. Does 4198 not need to be listed in static metadata. Support will be 4199 removed in future versions of camera service.</details> 4200 </entry> 4201 <entry name="triggerAfWithAuto" type="byte" visibility="system" deprecated="true" optional="true"> 4202 <description>If set to 1, then the camera service always 4203 switches to FOCUS_MODE_AUTO before issuing a AF 4204 trigger.</description> 4205 <details>HAL implementations should implement AF trigger 4206 modes for AUTO, MACRO, CONTINUOUS_FOCUS, and 4207 CONTINUOUS_PICTURE modes instead of using this flag. Does 4208 not need to be listed in static metadata. Support will be 4209 removed in future versions of camera service</details> 4210 </entry> 4211 <entry name="useZslFormat" type="byte" visibility="system" deprecated="true" optional="true"> 4212 <description>If set to 1, the camera service uses 4213 CAMERA2_PIXEL_FORMAT_ZSL instead of 4214 HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED for the zero 4215 shutter lag stream</description> 4216 <details>HAL implementations should use gralloc usage flags 4217 to determine that a stream will be used for 4218 zero-shutter-lag, instead of relying on an explicit 4219 format setting. Does not need to be listed in static 4220 metadata. Support will be removed in future versions of 4221 camera service.</details> 4222 </entry> 4223 <entry name="usePartialResult" type="byte" visibility="hidden" deprecated="true" optional="true"> 4224 <description> 4225 If set to 1, the HAL will always split result 4226 metadata for a single capture into multiple buffers, 4227 returned using multiple process_capture_result calls. 4228 </description> 4229 <details> 4230 Does not need to be listed in static 4231 metadata. Support for partial results will be reworked in 4232 future versions of camera service. This quirk will stop 4233 working at that point; DO NOT USE without careful 4234 consideration of future support. 4235 </details> 4236 <hal_details> 4237 Refer to `camera3_capture_result::partial_result` 4238 for information on how to implement partial results. 4239 </hal_details> 4240 </entry> 4241 </static> 4242 <dynamic> 4243 <entry name="partialResult" type="byte" visibility="hidden" deprecated="true" optional="true" enum="true" typedef="boolean"> 4244 <enum> 4245 <value>FINAL 4246 <notes>The last or only metadata result buffer 4247 for this capture.</notes> 4248 </value> 4249 <value>PARTIAL 4250 <notes>A partial buffer of result metadata for this 4251 capture. More result buffers for this capture will be sent 4252 by the camera device, the last of which will be marked 4253 FINAL.</notes> 4254 </value> 4255 </enum> 4256 <description> 4257 Whether a result given to the framework is the 4258 final one for the capture, or only a partial that contains a 4259 subset of the full set of dynamic metadata 4260 values.</description> 4261 <range>Optional. Default value is FINAL.</range> 4262 <details> 4263 The entries in the result metadata buffers for a 4264 single capture may not overlap, except for this entry. The 4265 FINAL buffers must retain FIFO ordering relative to the 4266 requests that generate them, so the FINAL buffer for frame 3 must 4267 always be sent to the framework after the FINAL buffer for frame 2, and 4268 before the FINAL buffer for frame 4. PARTIAL buffers may be returned 4269 in any order relative to other frames, but all PARTIAL buffers for a given 4270 capture must arrive before the FINAL buffer for that capture. This entry may 4271 only be used by the camera device if quirks.usePartialResult is set to 1. 4272 </details> 4273 <hal_details> 4274 Refer to `camera3_capture_result::partial_result` 4275 for information on how to implement partial results. 4276 </hal_details> 4277 </entry> 4278 </dynamic> 4279 </section> 4280 <section name="request"> 4281 <controls> 4282 <entry name="frameCount" type="int32" visibility="system" deprecated="true"> 4283 <description>A frame counter set by the framework. Must 4284 be maintained unchanged in output frame. This value monotonically 4285 increases with every new result (that is, each new result has a unique 4286 frameCount value). 4287 </description> 4288 <units>incrementing integer</units> 4289 <range>Any int.</range> 4290 </entry> 4291 <entry name="id" type="int32" visibility="hidden"> 4292 <description>An application-specified ID for the current 4293 request. Must be maintained unchanged in output 4294 frame</description> 4295 <units>arbitrary integer assigned by application</units> 4296 <range>Any int</range> 4297 <tag id="V1" /> 4298 </entry> 4299 <entry name="inputStreams" type="int32" visibility="system" deprecated="true" 4300 container="array"> 4301 <array> 4302 <size>n</size> 4303 </array> 4304 <description>List which camera reprocess stream is used 4305 for the source of reprocessing data.</description> 4306 <units>List of camera reprocess stream IDs</units> 4307 <range> 4308 Typically, only one entry allowed, must be a valid reprocess stream ID. 4309 </range> 4310 <details>Only meaningful when android.request.type == 4311 REPROCESS. Ignored otherwise</details> 4312 <tag id="HAL2" /> 4313 </entry> 4314 <entry name="metadataMode" type="byte" visibility="system" 4315 enum="true"> 4316 <enum> 4317 <value>NONE 4318 <notes>No metadata should be produced on output, except 4319 for application-bound buffer data. If no 4320 application-bound streams exist, no frame should be 4321 placed in the output frame queue. If such streams 4322 exist, a frame should be placed on the output queue 4323 with null metadata but with the necessary output buffer 4324 information. Timestamp information should still be 4325 included with any output stream buffers</notes></value> 4326 <value>FULL 4327 <notes>All metadata should be produced. Statistics will 4328 only be produced if they are separately 4329 enabled</notes></value> 4330 </enum> 4331 <description>How much metadata to produce on 4332 output</description> 4333 <tag id="FUTURE" /> 4334 </entry> 4335 <entry name="outputStreams" type="int32" visibility="system" deprecated="true" 4336 container="array"> 4337 <array> 4338 <size>n</size> 4339 </array> 4340 <description>Lists which camera output streams image data 4341 from this capture must be sent to</description> 4342 <units>List of camera stream IDs</units> 4343 <range>List must only include streams that have been 4344 created</range> 4345 <details>If no output streams are listed, then the image 4346 data should simply be discarded. The image data must 4347 still be captured for metadata and statistics production, 4348 and the lens and flash must operate as requested.</details> 4349 <tag id="HAL2" /> 4350 </entry> 4351 <entry name="type" type="byte" visibility="system" deprecated="true" enum="true"> 4352 <enum> 4353 <value>CAPTURE 4354 <notes>Capture a new image from the imaging hardware, 4355 and process it according to the 4356 settings</notes></value> 4357 <value>REPROCESS 4358 <notes>Process previously captured data; the 4359 android.request.inputStreams parameter determines the 4360 source reprocessing stream. TODO: Mark dynamic metadata 4361 needed for reprocessing with [RP]</notes></value> 4362 </enum> 4363 <description>The type of the request; either CAPTURE or 4364 REPROCESS. For HAL3, this tag is redundant. 4365 </description> 4366 <tag id="HAL2" /> 4367 </entry> 4368 </controls> 4369 <static> 4370 <entry name="maxNumOutputStreams" type="int32" visibility="ndk_public" 4371 container="array" hwlevel="legacy"> 4372 <array> 4373 <size>3</size> 4374 </array> 4375 <description>The maximum numbers of different types of output streams 4376 that can be configured and used simultaneously by a camera device. 4377 </description> 4378 <range> 4379 For processed (and stalling) format streams, &gt;= 1. 4380 4381 For Raw format (either stalling or non-stalling) streams, &gt;= 0. 4382 4383 For processed (but not stalling) format streams, &gt;= 3 4384 for FULL mode devices (`android.info.supportedHardwareLevel == FULL`); 4385 &gt;= 2 for LIMITED mode devices (`android.info.supportedHardwareLevel == LIMITED`). 4386 </range> 4387 <details> 4388 This is a 3 element tuple that contains the max number of output simultaneous 4389 streams for raw sensor, processed (but not stalling), and processed (and stalling) 4390 formats respectively. For example, assuming that JPEG is typically a processed and 4391 stalling stream, if max raw sensor format output stream number is 1, max YUV streams 4392 number is 3, and max JPEG stream number is 2, then this tuple should be `(1, 3, 2)`. 4393 4394 This lists the upper bound of the number of output streams supported by 4395 the camera device. Using more streams simultaneously may require more hardware and 4396 CPU resources that will consume more power. The image format for an output stream can 4397 be any supported format provided by android.scaler.availableStreamConfigurations. 4398 The formats defined in android.scaler.availableStreamConfigurations can be catergorized 4399 into the 3 stream types as below: 4400 4401 * Processed (but stalling): any non-RAW format with a stallDurations &gt; 0. 4402 Typically {@link AIMAGE_FORMAT_JPEG} format. 4403 * Raw formats: {@link AIMAGE_FORMAT_RAW16}, {@link AIMAGE_FORMAT_RAW10}, or 4404 {@link AIMAGE_FORMAT_RAW12}. 4405 * Processed (but not-stalling): any non-RAW format without a stall duration. 4406 Typically {@link AIMAGE_FORMAT_YUV_420_888}. 4407 </details> 4408 <tag id="BC" /> 4409 </entry> 4410 <entry name="maxNumOutputRaw" type="int32" visibility="java_public" synthetic="true" 4411 hwlevel="legacy"> 4412 <description>The maximum numbers of different types of output streams 4413 that can be configured and used simultaneously by a camera device 4414 for any `RAW` formats. 4415 </description> 4416 <range> 4417 &gt;= 0 4418 </range> 4419 <details> 4420 This value contains the max number of output simultaneous 4421 streams from the raw sensor. 4422 4423 This lists the upper bound of the number of output streams supported by 4424 the camera device. Using more streams simultaneously may require more hardware and 4425 CPU resources that will consume more power. The image format for this kind of an output stream can 4426 be any `RAW` and supported format provided by android.scaler.streamConfigurationMap. 4427 4428 In particular, a `RAW` format is typically one of: 4429 4430 * {@link AIMAGE_FORMAT_RAW16} 4431 * {@link AIMAGE_FORMAT_RAW10} 4432 * {@link AIMAGE_FORMAT_RAW12} 4433 4434 LEGACY mode devices (android.info.supportedHardwareLevel `==` LEGACY) 4435 never support raw streams. 4436 </details> 4437 </entry> 4438 <entry name="maxNumOutputProc" type="int32" visibility="java_public" synthetic="true" 4439 hwlevel="legacy"> 4440 <description>The maximum numbers of different types of output streams 4441 that can be configured and used simultaneously by a camera device 4442 for any processed (but not-stalling) formats. 4443 </description> 4444 <range> 4445 &gt;= 3 4446 for FULL mode devices (`android.info.supportedHardwareLevel == FULL`); 4447 &gt;= 2 for LIMITED mode devices (`android.info.supportedHardwareLevel == LIMITED`). 4448 </range> 4449 <details> 4450 This value contains the max number of output simultaneous 4451 streams for any processed (but not-stalling) formats. 4452 4453 This lists the upper bound of the number of output streams supported by 4454 the camera device. Using more streams simultaneously may require more hardware and 4455 CPU resources that will consume more power. The image format for this kind of an output stream can 4456 be any non-`RAW` and supported format provided by android.scaler.streamConfigurationMap. 4457 4458 Processed (but not-stalling) is defined as any non-RAW format without a stall duration. 4459 Typically: 4460 4461 * {@link AIMAGE_FORMAT_YUV_420_888} 4462 * Implementation-defined formats, i.e. {@link 4463 android.hardware.camera2.params.StreamConfigurationMap#isOutputSupportedFor(Class)} 4464 4465 For full guarantees, query {@link 4466 android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration} with a 4467 processed format -- it will return 0 for a non-stalling stream. 4468 4469 LEGACY devices will support at least 2 processing/non-stalling streams. 4470 </details> 4471 </entry> 4472 <entry name="maxNumOutputProcStalling" type="int32" visibility="java_public" synthetic="true" 4473 hwlevel="legacy"> 4474 <description>The maximum numbers of different types of output streams 4475 that can be configured and used simultaneously by a camera device 4476 for any processed (and stalling) formats. 4477 </description> 4478 <range> 4479 &gt;= 1 4480 </range> 4481 <details> 4482 This value contains the max number of output simultaneous 4483 streams for any processed (but not-stalling) formats. 4484 4485 This lists the upper bound of the number of output streams supported by 4486 the camera device. Using more streams simultaneously may require more hardware and 4487 CPU resources that will consume more power. The image format for this kind of an output stream can 4488 be any non-`RAW` and supported format provided by android.scaler.streamConfigurationMap. 4489 4490 A processed and stalling format is defined as any non-RAW format with a stallDurations 4491 &gt; 0. Typically only the {@link AIMAGE_FORMAT_JPEG} format is a 4492 stalling format. 4493 4494 For full guarantees, query {@link 4495 android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration} with a 4496 processed format -- it will return a non-0 value for a stalling stream. 4497 4498 LEGACY devices will support up to 1 processing/stalling stream. 4499 </details> 4500 </entry> 4501 <entry name="maxNumReprocessStreams" type="int32" visibility="system" 4502 deprecated="true" container="array"> 4503 <array> 4504 <size>1</size> 4505 </array> 4506 <description>How many reprocessing streams of any type 4507 can be allocated at the same time.</description> 4508 <range>&gt;= 0</range> 4509 <details> 4510 Only used by HAL2.x. 4511 4512 When set to 0, it means no reprocess stream is supported. 4513 </details> 4514 <tag id="HAL2" /> 4515 </entry> 4516 <entry name="maxNumInputStreams" type="int32" visibility="java_public" hwlevel="full"> 4517 <description> 4518 The maximum numbers of any type of input streams 4519 that can be configured and used simultaneously by a camera device. 4520 </description> 4521 <range> 4522 0 or 1. 4523 </range> 4524 <details>When set to 0, it means no input stream is supported. 4525 4526 The image format for a input stream can be any supported format returned by {@link 4527 android.hardware.camera2.params.StreamConfigurationMap#getInputFormats}. When using an 4528 input stream, there must be at least one output stream configured to to receive the 4529 reprocessed images. 4530 4531 When an input stream and some output streams are used in a reprocessing request, 4532 only the input buffer will be used to produce these output stream buffers, and a 4533 new sensor image will not be captured. 4534 4535 For example, for Zero Shutter Lag (ZSL) still capture use case, the input 4536 stream image format will be PRIVATE, the associated output stream image format 4537 should be JPEG. 4538 </details> 4539 <hal_details> 4540 For the reprocessing flow and controls, see 4541 hardware/libhardware/include/hardware/camera3.h Section 10 for more details. 4542 </hal_details> 4543 <tag id="REPROC" /> 4544 </entry> 4545 </static> 4546 <dynamic> 4547 <entry name="frameCount" type="int32" visibility="hidden" deprecated="true"> 4548 <description>A frame counter set by the framework. This value monotonically 4549 increases with every new result (that is, each new result has a unique 4550 frameCount value).</description> 4551 <units>count of frames</units> 4552 <range>&gt; 0</range> 4553 <details>Reset on release()</details> 4554 </entry> 4555 <clone entry="android.request.id" kind="controls"></clone> 4556 <clone entry="android.request.metadataMode" 4557 kind="controls"></clone> 4558 <clone entry="android.request.outputStreams" 4559 kind="controls"></clone> 4560 <entry name="pipelineDepth" type="byte" visibility="public" hwlevel="legacy"> 4561 <description>Specifies the number of pipeline stages the frame went 4562 through from when it was exposed to when the final completed result 4563 was available to the framework.</description> 4564 <range>&lt;= android.request.pipelineMaxDepth</range> 4565 <details>Depending on what settings are used in the request, and 4566 what streams are configured, the data may undergo less processing, 4567 and some pipeline stages skipped. 4568 4569 See android.request.pipelineMaxDepth for more details. 4570 </details> 4571 <hal_details> 4572 This value must always represent the accurate count of how many 4573 pipeline stages were actually used. 4574 </hal_details> 4575 </entry> 4576 </dynamic> 4577 <static> 4578 <entry name="pipelineMaxDepth" type="byte" visibility="public" hwlevel="legacy"> 4579 <description>Specifies the number of maximum pipeline stages a frame 4580 has to go through from when it's exposed to when it's available 4581 to the framework.</description> 4582 <details>A typical minimum value for this is 2 (one stage to expose, 4583 one stage to readout) from the sensor. The ISP then usually adds 4584 its own stages to do custom HW processing. Further stages may be 4585 added by SW processing. 4586 4587 Depending on what settings are used (e.g. YUV, JPEG) and what 4588 processing is enabled (e.g. face detection), the actual pipeline 4589 depth (specified by android.request.pipelineDepth) may be less than 4590 the max pipeline depth. 4591 4592 A pipeline depth of X stages is equivalent to a pipeline latency of 4593 X frame intervals. 4594 4595 This value will normally be 8 or less, however, for high speed capture session, 4596 the max pipeline depth will be up to 8 x size of high speed capture request list. 4597 </details> 4598 <hal_details> 4599 This value should be 4 or less, expect for the high speed recording session, where the 4600 max batch sizes may be larger than 1. 4601 </hal_details> 4602 </entry> 4603 <entry name="partialResultCount" type="int32" visibility="public" optional="true"> 4604 <description>Defines how many sub-components 4605 a result will be composed of. 4606 </description> 4607 <range>&gt;= 1</range> 4608 <details>In order to combat the pipeline latency, partial results 4609 may be delivered to the application layer from the camera device as 4610 soon as they are available. 4611 4612 Optional; defaults to 1. A value of 1 means that partial 4613 results are not supported, and only the final TotalCaptureResult will 4614 be produced by the camera device. 4615 4616 A typical use case for this might be: after requesting an 4617 auto-focus (AF) lock the new AF state might be available 50% 4618 of the way through the pipeline. The camera device could 4619 then immediately dispatch this state via a partial result to 4620 the application, and the rest of the metadata via later 4621 partial results. 4622 </details> 4623 </entry> 4624 <entry name="availableCapabilities" type="byte" visibility="public" 4625 enum="true" container="array" hwlevel="legacy"> 4626 <array> 4627 <size>n</size> 4628 </array> 4629 <enum> 4630 <value>BACKWARD_COMPATIBLE 4631 <notes>The minimal set of capabilities that every camera 4632 device (regardless of android.info.supportedHardwareLevel) 4633 supports. 4634 4635 This capability is listed by all normal devices, and 4636 indicates that the camera device has a feature set 4637 that's comparable to the baseline requirements for the 4638 older android.hardware.Camera API. 4639 4640 Devices with the DEPTH_OUTPUT capability might not list this 4641 capability, indicating that they support only depth measurement, 4642 not standard color output. 4643 </notes> 4644 </value> 4645 <value optional="true">MANUAL_SENSOR 4646 <notes> 4647 The camera device can be manually controlled (3A algorithms such 4648 as auto-exposure, and auto-focus can be bypassed). 4649 The camera device supports basic manual control of the sensor image 4650 acquisition related stages. This means the following controls are 4651 guaranteed to be supported: 4652 4653 * Manual frame duration control 4654 * android.sensor.frameDuration 4655 * android.sensor.info.maxFrameDuration 4656 * Manual exposure control 4657 * android.sensor.exposureTime 4658 * android.sensor.info.exposureTimeRange 4659 * Manual sensitivity control 4660 * android.sensor.sensitivity 4661 * android.sensor.info.sensitivityRange 4662 * Manual lens control (if the lens is adjustable) 4663 * android.lens.* 4664 * Manual flash control (if a flash unit is present) 4665 * android.flash.* 4666 * Manual black level locking 4667 * android.blackLevel.lock 4668 * Auto exposure lock 4669 * android.control.aeLock 4670 4671 If any of the above 3A algorithms are enabled, then the camera 4672 device will accurately report the values applied by 3A in the 4673 result. 4674 4675 A given camera device may also support additional manual sensor controls, 4676 but this capability only covers the above list of controls. 4677 4678 If this is supported, android.scaler.streamConfigurationMap will 4679 additionally return a min frame duration that is greater than 4680 zero for each supported size-format combination. 4681 </notes> 4682 </value> 4683 <value optional="true">MANUAL_POST_PROCESSING 4684 <notes> 4685 The camera device post-processing stages can be manually controlled. 4686 The camera device supports basic manual control of the image post-processing 4687 stages. This means the following controls are guaranteed to be supported: 4688 4689 * Manual tonemap control 4690 * android.tonemap.curve 4691 * android.tonemap.mode 4692 * android.tonemap.maxCurvePoints 4693 * android.tonemap.gamma 4694 * android.tonemap.presetCurve 4695 4696 * Manual white balance control 4697 * android.colorCorrection.transform 4698 * android.colorCorrection.gains 4699 * Manual lens shading map control 4700 * android.shading.mode 4701 * android.statistics.lensShadingMapMode 4702 * android.statistics.lensShadingMap 4703 * android.lens.info.shadingMapSize 4704 * Manual aberration correction control (if aberration correction is supported) 4705 * android.colorCorrection.aberrationMode 4706 * android.colorCorrection.availableAberrationModes 4707 * Auto white balance lock 4708 * android.control.awbLock 4709 4710 If auto white balance is enabled, then the camera device 4711 will accurately report the values applied by AWB in the result. 4712 4713 A given camera device may also support additional post-processing 4714 controls, but this capability only covers the above list of controls. 4715 </notes> 4716 </value> 4717 <value optional="true">RAW 4718 <notes> 4719 The camera device supports outputting RAW buffers and 4720 metadata for interpreting them. 4721 4722 Devices supporting the RAW capability allow both for 4723 saving DNG files, and for direct application processing of 4724 raw sensor images. 4725 4726 * RAW_SENSOR is supported as an output format. 4727 * The maximum available resolution for RAW_SENSOR streams 4728 will match either the value in 4729 android.sensor.info.pixelArraySize or 4730 android.sensor.info.preCorrectionActiveArraySize. 4731 * All DNG-related optional metadata entries are provided 4732 by the camera device. 4733 </notes> 4734 </value> 4735 <value optional="true" ndk_hidden="true">PRIVATE_REPROCESSING 4736 <notes> 4737 The camera device supports the Zero Shutter Lag reprocessing use case. 4738 4739 * One input stream is supported, that is, `android.request.maxNumInputStreams == 1`. 4740 * {@link android.graphics.ImageFormat#PRIVATE} is supported as an output/input format, 4741 that is, {@link android.graphics.ImageFormat#PRIVATE} is included in the lists of 4742 formats returned by {@link 4743 android.hardware.camera2.params.StreamConfigurationMap#getInputFormats} and {@link 4744 android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats}. 4745 * {@link android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput} 4746 returns non empty int[] for each supported input format returned by {@link 4747 android.hardware.camera2.params.StreamConfigurationMap#getInputFormats}. 4748 * Each size returned by {@link 4749 android.hardware.camera2.params.StreamConfigurationMap#getInputSizes 4750 getInputSizes(ImageFormat.PRIVATE)} is also included in {@link 4751 android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes 4752 getOutputSizes(ImageFormat.PRIVATE)} 4753 * Using {@link android.graphics.ImageFormat#PRIVATE} does not cause a frame rate drop 4754 relative to the sensor's maximum capture rate (at that resolution). 4755 * {@link android.graphics.ImageFormat#PRIVATE} will be reprocessable into both 4756 {@link android.graphics.ImageFormat#YUV_420_888} and 4757 {@link android.graphics.ImageFormat#JPEG} formats. 4758 * The maximum available resolution for PRIVATE streams 4759 (both input/output) will match the maximum available 4760 resolution of JPEG streams. 4761 * Static metadata android.reprocess.maxCaptureStall. 4762 * Only below controls are effective for reprocessing requests and 4763 will be present in capture results, other controls in reprocess 4764 requests will be ignored by the camera device. 4765 * android.jpeg.* 4766 * android.noiseReduction.mode 4767 * android.edge.mode 4768 * android.noiseReduction.availableNoiseReductionModes and 4769 android.edge.availableEdgeModes will both list ZERO_SHUTTER_LAG as a supported mode. 4770 </notes> 4771 </value> 4772 <value optional="true">READ_SENSOR_SETTINGS 4773 <notes> 4774 The camera device supports accurately reporting the sensor settings for many of 4775 the sensor controls while the built-in 3A algorithm is running. This allows 4776 reporting of sensor settings even when these settings cannot be manually changed. 4777 4778 The values reported for the following controls are guaranteed to be available 4779 in the CaptureResult, including when 3A is enabled: 4780 4781 * Exposure control 4782 * android.sensor.exposureTime 4783 * Sensitivity control 4784 * android.sensor.sensitivity 4785 * Lens controls (if the lens is adjustable) 4786 * android.lens.focusDistance 4787 * android.lens.aperture 4788 4789 This capability is a subset of the MANUAL_SENSOR control capability, and will 4790 always be included if the MANUAL_SENSOR capability is available. 4791 </notes> 4792 </value> 4793 <value optional="true">BURST_CAPTURE 4794 <notes> 4795 The camera device supports capturing high-resolution images at >= 20 frames per 4796 second, in at least the uncompressed YUV format, when post-processing settings are set 4797 to FAST. Additionally, maximum-resolution images can be captured at >= 10 frames 4798 per second. Here, 'high resolution' means at least 8 megapixels, or the maximum 4799 resolution of the device, whichever is smaller. 4800 4801 More specifically, this means that at least one output {@link 4802 AIMAGE_FORMAT_YUV_420_888} size listed in 4803 {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS} is larger or equal to the 4804 'high resolution' defined above, and can be captured at at least 20 fps. 4805 For the largest {@link AIMAGE_FORMAT_YUV_420_888} size listed in 4806 {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}, camera device can capture this 4807 size for at least 10 frames per second. 4808 Also the android.control.aeAvailableTargetFpsRanges entry lists at least one FPS range 4809 where the minimum FPS is >= 1 / minimumFrameDuration for the largest YUV_420_888 size. 4810 4811 If the device supports the {@link AIMAGE_FORMAT_RAW10}, {@link 4812 AIMAGE_FORMAT_RAW12}, then those can also be captured at the same rate 4813 as the maximum-size YUV_420_888 resolution is. 4814 4815 In addition, the android.sync.maxLatency field is guaranted to have a value between 0 4816 and 4, inclusive. android.control.aeLockAvailable and android.control.awbLockAvailable 4817 are also guaranteed to be `true` so burst capture with these two locks ON yields 4818 consistent image output. 4819 </notes> 4820 </value> 4821 <value optional="true" ndk_hidden="true">YUV_REPROCESSING 4822 <notes> 4823 The camera device supports the YUV_420_888 reprocessing use case, similar as 4824 PRIVATE_REPROCESSING, This capability requires the camera device to support the 4825 following: 4826 4827 * One input stream is supported, that is, `android.request.maxNumInputStreams == 1`. 4828 * {@link android.graphics.ImageFormat#YUV_420_888} is supported as an output/input format, that is, 4829 YUV_420_888 is included in the lists of formats returned by 4830 {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats} and 4831 {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats}. 4832 * {@link 4833 android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput} 4834 returns non-empty int[] for each supported input format returned by {@link 4835 android.hardware.camera2.params.StreamConfigurationMap#getInputFormats}. 4836 * Each size returned by {@link 4837 android.hardware.camera2.params.StreamConfigurationMap#getInputSizes 4838 getInputSizes(YUV_420_888)} is also included in {@link 4839 android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes 4840 getOutputSizes(YUV_420_888)} 4841 * Using {@link android.graphics.ImageFormat#YUV_420_888} does not cause a frame rate drop 4842 relative to the sensor's maximum capture rate (at that resolution). 4843 * {@link android.graphics.ImageFormat#YUV_420_888} will be reprocessable into both 4844 {@link android.graphics.ImageFormat#YUV_420_888} and {@link 4845 android.graphics.ImageFormat#JPEG} formats. 4846 * The maximum available resolution for {@link 4847 android.graphics.ImageFormat#YUV_420_888} streams (both input/output) will match the 4848 maximum available resolution of {@link android.graphics.ImageFormat#JPEG} streams. 4849 * Static metadata android.reprocess.maxCaptureStall. 4850 * Only the below controls are effective for reprocessing requests and will be present 4851 in capture results. The reprocess requests are from the original capture results that 4852 are associated with the intermediate {@link android.graphics.ImageFormat#YUV_420_888} 4853 output buffers. All other controls in the reprocess requests will be ignored by the 4854 camera device. 4855 * android.jpeg.* 4856 * android.noiseReduction.mode 4857 * android.edge.mode 4858 * android.reprocess.effectiveExposureFactor 4859 * android.noiseReduction.availableNoiseReductionModes and 4860 android.edge.availableEdgeModes will both list ZERO_SHUTTER_LAG as a supported mode. 4861 </notes> 4862 </value> 4863 <value optional="true">DEPTH_OUTPUT 4864 <notes> 4865 The camera device can produce depth measurements from its field of view. 4866 4867 This capability requires the camera device to support the following: 4868 4869 * {@link AIMAGE_FORMAT_DEPTH16} is supported as an output format. 4870 * {@link AIMAGE_FORMAT_DEPTH_POINT_CLOUD} is optionally supported as an 4871 output format. 4872 * This camera device, and all camera devices with the same android.lens.facing, 4873 will list the following calibration entries in {@link ACameraMetadata} from both 4874 {@link ACameraManager_getCameraCharacteristics} and 4875 {@link ACameraCaptureSession_captureCallback_result}: 4876 - android.lens.poseTranslation 4877 - android.lens.poseRotation 4878 - android.lens.intrinsicCalibration 4879 - android.lens.radialDistortion 4880 * The android.depth.depthIsExclusive entry is listed by this device. 4881 * A LIMITED camera with only the DEPTH_OUTPUT capability does not have to support 4882 normal YUV_420_888, JPEG, and PRIV-format outputs. It only has to support the DEPTH16 4883 format. 4884 4885 Generally, depth output operates at a slower frame rate than standard color capture, 4886 so the DEPTH16 and DEPTH_POINT_CLOUD formats will commonly have a stall duration that 4887 should be accounted for (see 4888 {@link ACAMERA_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS}). 4889 On a device that supports both depth and color-based output, to enable smooth preview, 4890 using a repeating burst is recommended, where a depth-output target is only included 4891 once every N frames, where N is the ratio between preview output rate and depth output 4892 rate, including depth stall time. 4893 </notes> 4894 </value> 4895 <value optional="true" ndk_hidden="true">CONSTRAINED_HIGH_SPEED_VIDEO 4896 <notes> 4897 The device supports constrained high speed video recording (frame rate >=120fps) 4898 use case. The camera device will support high speed capture session created by 4899 {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession}, which 4900 only accepts high speed request lists created by 4901 {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList}. 4902 4903 A camera device can still support high speed video streaming by advertising the high speed 4904 FPS ranges in android.control.aeAvailableTargetFpsRanges. For this case, all normal 4905 capture request per frame control and synchronization requirements will apply to 4906 the high speed fps ranges, the same as all other fps ranges. This capability describes 4907 the capability of a specialized operating mode with many limitations (see below), which 4908 is only targeted at high speed video recording. 4909 4910 The supported high speed video sizes and fps ranges are specified in 4911 {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges}. 4912 To get desired output frame rates, the application is only allowed to select video size 4913 and FPS range combinations provided by 4914 {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes}. 4915 The fps range can be controlled via android.control.aeTargetFpsRange. 4916 4917 In this capability, the camera device will override aeMode, awbMode, and afMode to 4918 ON, AUTO, and CONTINUOUS_VIDEO, respectively. All post-processing block mode 4919 controls will be overridden to be FAST. Therefore, no manual control of capture 4920 and post-processing parameters is possible. All other controls operate the 4921 same as when android.control.mode == AUTO. This means that all other 4922 android.control.* fields continue to work, such as 4923 4924 * android.control.aeTargetFpsRange 4925 * android.control.aeExposureCompensation 4926 * android.control.aeLock 4927 * android.control.awbLock 4928 * android.control.effectMode 4929 * android.control.aeRegions 4930 * android.control.afRegions 4931 * android.control.awbRegions 4932 * android.control.afTrigger 4933 * android.control.aePrecaptureTrigger 4934 4935 Outside of android.control.*, the following controls will work: 4936 4937 * android.flash.mode (TORCH mode only, automatic flash for still capture will not 4938 work since aeMode is ON) 4939 * android.lens.opticalStabilizationMode (if it is supported) 4940 * android.scaler.cropRegion 4941 * android.statistics.faceDetectMode (if it is supported) 4942 4943 For high speed recording use case, the actual maximum supported frame rate may 4944 be lower than what camera can output, depending on the destination Surfaces for 4945 the image data. For example, if the destination surface is from video encoder, 4946 the application need check if the video encoder is capable of supporting the 4947 high frame rate for a given video size, or it will end up with lower recording 4948 frame rate. If the destination surface is from preview window, the actual preview frame 4949 rate will be bounded by the screen refresh rate. 4950 4951 The camera device will only support up to 2 high speed simultaneous output surfaces 4952 (preview and recording surfaces) 4953 in this mode. Above controls will be effective only if all of below conditions are true: 4954 4955 * The application creates a camera capture session with no more than 2 surfaces via 4956 {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession}. The 4957 targeted surfaces must be preview surface (either from 4958 {@link android.view.SurfaceView} or {@link android.graphics.SurfaceTexture}) or 4959 recording surface(either from {@link android.media.MediaRecorder#getSurface} or 4960 {@link android.media.MediaCodec#createInputSurface}). 4961 * The stream sizes are selected from the sizes reported by 4962 {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes}. 4963 * The FPS ranges are selected from 4964 {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges}. 4965 4966 When above conditions are NOT satistied, 4967 {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession} 4968 will fail. 4969 4970 Switching to a FPS range that has different maximum FPS may trigger some camera device 4971 reconfigurations, which may introduce extra latency. It is recommended that 4972 the application avoids unnecessary maximum target FPS changes as much as possible 4973 during high speed streaming. 4974 </notes> 4975 </value> 4976 </enum> 4977 <description>List of capabilities that this camera device 4978 advertises as fully supporting.</description> 4979 <details> 4980 A capability is a contract that the camera device makes in order 4981 to be able to satisfy one or more use cases. 4982 4983 Listing a capability guarantees that the whole set of features 4984 required to support a common use will all be available. 4985 4986 Using a subset of the functionality provided by an unsupported 4987 capability may be possible on a specific camera device implementation; 4988 to do this query each of android.request.availableRequestKeys, 4989 android.request.availableResultKeys, 4990 android.request.availableCharacteristicsKeys. 4991 4992 The following capabilities are guaranteed to be available on 4993 android.info.supportedHardwareLevel `==` FULL devices: 4994 4995 * MANUAL_SENSOR 4996 * MANUAL_POST_PROCESSING 4997 4998 Other capabilities may be available on either FULL or LIMITED 4999 devices, but the application should query this key to be sure. 5000 </details> 5001 <hal_details> 5002 Additional constraint details per-capability will be available 5003 in the Compatibility Test Suite. 5004 5005 Minimum baseline requirements required for the 5006 BACKWARD_COMPATIBLE capability are not explicitly listed. 5007 Instead refer to "BC" tags and the camera CTS tests in the 5008 android.hardware.camera2.cts package. 5009 5010 Listed controls that can be either request or result (e.g. 5011 android.sensor.exposureTime) must be available both in the 5012 request and the result in order to be considered to be 5013 capability-compliant. 5014 5015 For example, if the HAL claims to support MANUAL control, 5016 then exposure time must be configurable via the request _and_ 5017 the actual exposure applied must be available via 5018 the result. 5019 5020 If MANUAL_SENSOR is omitted, the HAL may choose to omit the 5021 android.scaler.availableMinFrameDurations static property entirely. 5022 5023 For PRIVATE_REPROCESSING and YUV_REPROCESSING capabilities, see 5024 hardware/libhardware/include/hardware/camera3.h Section 10 for more information. 5025 5026 Devices that support the MANUAL_SENSOR capability must support the 5027 CAMERA3_TEMPLATE_MANUAL template defined in camera3.h. 5028 5029 Devices that support the PRIVATE_REPROCESSING capability or the 5030 YUV_REPROCESSING capability must support the 5031 CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template defined in camera3.h. 5032 5033 For DEPTH_OUTPUT, the depth-format keys 5034 android.depth.availableDepthStreamConfigurations, 5035 android.depth.availableDepthMinFrameDurations, 5036 android.depth.availableDepthStallDurations must be available, in 5037 addition to the other keys explicitly mentioned in the DEPTH_OUTPUT 5038 enum notes. The entry android.depth.maxDepthSamples must be available 5039 if the DEPTH_POINT_CLOUD format is supported (HAL pixel format BLOB, dataspace 5040 DEPTH). 5041 </hal_details> 5042 </entry> 5043 <entry name="availableRequestKeys" type="int32" visibility="ndk_public" 5044 container="array" hwlevel="legacy"> 5045 <array> 5046 <size>n</size> 5047 </array> 5048 <description>A list of all keys that the camera device has available 5049 to use with {@link ACaptureRequest}.</description> 5050 5051 <details>Attempting to set a key into a CaptureRequest that is not 5052 listed here will result in an invalid request and will be rejected 5053 by the camera device. 5054 5055 This field can be used to query the feature set of a camera device 5056 at a more granular level than capabilities. This is especially 5057 important for optional keys that are not listed under any capability 5058 in android.request.availableCapabilities. 5059 </details> 5060 <hal_details> 5061 Vendor tags must not be listed here. Use the vendor tag metadata 5062 extensions C api instead (refer to camera3.h for more details). 5063 5064 Setting/getting vendor tags will be checked against the metadata 5065 vendor extensions API and not against this field. 5066 5067 The HAL must not consume any request tags that are not listed either 5068 here or in the vendor tag list. 5069 5070 The public camera2 API will always make the vendor tags visible 5071 via 5072 {@link android.hardware.camera2.CameraCharacteristics#getAvailableCaptureRequestKeys}. 5073 </hal_details> 5074 </entry> 5075 <entry name="availableResultKeys" type="int32" visibility="ndk_public" 5076 container="array" hwlevel="legacy"> 5077 <array> 5078 <size>n</size> 5079 </array> 5080 <description>A list of all keys that the camera device has available 5081 to query with {@link ACameraMetadata} from 5082 {@link ACameraCaptureSession_captureCallback_result}.</description> 5083 5084 <details>Attempting to get a key from a CaptureResult that is not 5085 listed here will always return a `null` value. Getting a key from 5086 a CaptureResult that is listed here will generally never return a `null` 5087 value. 5088 5089 The following keys may return `null` unless they are enabled: 5090 5091 * android.statistics.lensShadingMap (non-null iff android.statistics.lensShadingMapMode == ON) 5092 5093 (Those sometimes-null keys will nevertheless be listed here 5094 if they are available.) 5095 5096 This field can be used to query the feature set of a camera device 5097 at a more granular level than capabilities. This is especially 5098 important for optional keys that are not listed under any capability 5099 in android.request.availableCapabilities. 5100 </details> 5101 <hal_details> 5102 Tags listed here must always have an entry in the result metadata, 5103 even if that size is 0 elements. Only array-type tags (e.g. lists, 5104 matrices, strings) are allowed to have 0 elements. 5105 5106 Vendor tags must not be listed here. Use the vendor tag metadata 5107 extensions C api instead (refer to camera3.h for more details). 5108 5109 Setting/getting vendor tags will be checked against the metadata 5110 vendor extensions API and not against this field. 5111 5112 The HAL must not produce any result tags that are not listed either 5113 here or in the vendor tag list. 5114 5115 The public camera2 API will always make the vendor tags visible via {@link 5116 android.hardware.camera2.CameraCharacteristics#getAvailableCaptureResultKeys}. 5117 </hal_details> 5118 </entry> 5119 <entry name="availableCharacteristicsKeys" type="int32" visibility="ndk_public" 5120 container="array" hwlevel="legacy"> 5121 <array> 5122 <size>n</size> 5123 </array> 5124 <description>A list of all keys that the camera device has available 5125 to query with {@link ACameraMetadata} from 5126 {@link ACameraManager_getCameraCharacteristics}.</description> 5127 <details>This entry follows the same rules as 5128 android.request.availableResultKeys (except that it applies for 5129 CameraCharacteristics instead of CaptureResult). See above for more 5130 details. 5131 </details> 5132 <hal_details> 5133 Keys listed here must always have an entry in the static info metadata, 5134 even if that size is 0 elements. Only array-type tags (e.g. lists, 5135 matrices, strings) are allowed to have 0 elements. 5136 5137 Vendor tags must not be listed here. Use the vendor tag metadata 5138 extensions C api instead (refer to camera3.h for more details). 5139 5140 Setting/getting vendor tags will be checked against the metadata 5141 vendor extensions API and not against this field. 5142 5143 The HAL must not have any tags in its static info that are not listed 5144 either here or in the vendor tag list. 5145 5146 The public camera2 API will always make the vendor tags visible 5147 via {@link android.hardware.camera2.CameraCharacteristics#getKeys}. 5148 </hal_details> 5149 </entry> 5150 </static> 5151 </section> 5152 <section name="scaler"> 5153 <controls> 5154 <entry name="cropRegion" type="int32" visibility="public" 5155 container="array" typedef="rectangle" hwlevel="legacy"> 5156 <array> 5157 <size>4</size> 5158 </array> 5159 <description>The desired region of the sensor to read out for this capture.</description> 5160 <units>Pixel coordinates relative to 5161 android.sensor.info.activeArraySize</units> 5162 <details> 5163 This control can be used to implement digital zoom. 5164 5165 The data representation is int[4], which maps to (left, top, width, height). 5166 5167 The crop region coordinate system is based off 5168 android.sensor.info.activeArraySize, with `(0, 0)` being the 5169 top-left corner of the sensor active array. 5170 5171 Output streams use this rectangle to produce their output, 5172 cropping to a smaller region if necessary to maintain the 5173 stream's aspect ratio, then scaling the sensor input to 5174 match the output's configured resolution. 5175 5176 The crop region is applied after the RAW to other color 5177 space (e.g. YUV) conversion. Since raw streams 5178 (e.g. RAW16) don't have the conversion stage, they are not 5179 croppable. The crop region will be ignored by raw streams. 5180 5181 For non-raw streams, any additional per-stream cropping will 5182 be done to maximize the final pixel area of the stream. 5183 5184 For example, if the crop region is set to a 4:3 aspect 5185 ratio, then 4:3 streams will use the exact crop 5186 region. 16:9 streams will further crop vertically 5187 (letterbox). 5188 5189 Conversely, if the crop region is set to a 16:9, then 4:3 5190 outputs will crop horizontally (pillarbox), and 16:9 5191 streams will match exactly. These additional crops will 5192 be centered within the crop region. 5193 5194 The width and height of the crop region cannot 5195 be set to be smaller than 5196 `floor( activeArraySize.width / android.scaler.availableMaxDigitalZoom )` and 5197 `floor( activeArraySize.height / android.scaler.availableMaxDigitalZoom )`, respectively. 5198 5199 The camera device may adjust the crop region to account 5200 for rounding and other hardware requirements; the final 5201 crop region used will be included in the output capture 5202 result. 5203 </details> 5204 <hal_details> 5205 The output streams must maintain square pixels at all 5206 times, no matter what the relative aspect ratios of the 5207 crop region and the stream are. Negative values for 5208 corner are allowed for raw output if full pixel array is 5209 larger than active pixel array. Width and height may be 5210 rounded to nearest larger supportable width, especially 5211 for raw output, where only a few fixed scales may be 5212 possible. 5213 5214 For a set of output streams configured, if the sensor output is cropped to a smaller 5215 size than active array size, the HAL need follow below cropping rules: 5216 5217 * The HAL need handle the cropRegion as if the sensor crop size is the effective active 5218 array size.More specifically, the HAL must transform the request cropRegion from 5219 android.sensor.info.activeArraySize to the sensor cropped pixel area size in this way: 5220 1. Translate the requested cropRegion w.r.t., the left top corner of the sensor 5221 cropped pixel area by (tx, ty), 5222 where `tx = sensorCrop.top * (sensorCrop.height / activeArraySize.height)` 5223 and `tx = sensorCrop.left * (sensorCrop.width / activeArraySize.width)`. The 5224 (sensorCrop.top, sensorCrop.left) is the coordinate based off the 5225 android.sensor.info.activeArraySize. 5226 2. Scale the width and height of requested cropRegion with scaling factor of 5227 sensorCrop.width/activeArraySize.width and sensorCrop.height/activeArraySize.height 5228 respectively. 5229 Once this new cropRegion is calculated, the HAL must use this region to crop the image 5230 with regard to the sensor crop size (effective active array size). The HAL still need 5231 follow the general cropping rule for this new cropRegion and effective active 5232 array size. 5233 5234 * The HAL must report the cropRegion with regard to android.sensor.info.activeArraySize. 5235 The HAL need convert the new cropRegion generated above w.r.t., full active array size. 5236 The reported cropRegion may be slightly different with the requested cropRegion since 5237 the HAL may adjust the crop region to account for rounding, conversion error, or other 5238 hardware limitations. 5239 5240 HAL2.x uses only (x, y, width) 5241 </hal_details> 5242 <tag id="BC" /> 5243 </entry> 5244 </controls> 5245 <static> 5246 <entry name="availableFormats" type="int32" 5247 visibility="hidden" deprecated="true" enum="true" 5248 container="array" typedef="imageFormat"> 5249 <array> 5250 <size>n</size> 5251 </array> 5252 <enum> 5253 <value optional="true" id="0x20">RAW16 5254 <notes> 5255 RAW16 is a standard, cross-platform format for raw image 5256 buffers with 16-bit pixels. 5257 5258 Buffers of this format are typically expected to have a 5259 Bayer Color Filter Array (CFA) layout, which is given in 5260 android.sensor.info.colorFilterArrangement. Sensors with 5261 CFAs that are not representable by a format in 5262 android.sensor.info.colorFilterArrangement should not 5263 use this format. 5264 5265 Buffers of this format will also follow the constraints given for 5266 RAW_OPAQUE buffers, but with relaxed performance constraints. 5267 5268 This format is intended to give users access to the full contents 5269 of the buffers coming directly from the image sensor prior to any 5270 cropping or scaling operations, and all coordinate systems for 5271 metadata used for this format are relative to the size of the 5272 active region of the image sensor before any geometric distortion 5273 correction has been applied (i.e. 5274 android.sensor.info.preCorrectionActiveArraySize). Supported 5275 dimensions for this format are limited to the full dimensions of 5276 the sensor (e.g. either android.sensor.info.pixelArraySize or 5277 android.sensor.info.preCorrectionActiveArraySize will be the 5278 only supported output size). 5279 5280 See android.scaler.availableInputOutputFormatsMap for 5281 the full set of performance guarantees. 5282 </notes> 5283 </value> 5284 <value optional="true" id="0x24">RAW_OPAQUE 5285 <notes> 5286 RAW_OPAQUE (or 5287 {@link android.graphics.ImageFormat#RAW_PRIVATE RAW_PRIVATE} 5288 as referred in public API) is a format for raw image buffers 5289 coming from an image sensor. 5290 5291 The actual structure of buffers of this format is 5292 platform-specific, but must follow several constraints: 5293 5294 1. No image post-processing operations may have been applied to 5295 buffers of this type. These buffers contain raw image data coming 5296 directly from the image sensor. 5297 1. If a buffer of this format is passed to the camera device for 5298 reprocessing, the resulting images will be identical to the images 5299 produced if the buffer had come directly from the sensor and was 5300 processed with the same settings. 5301 5302 The intended use for this format is to allow access to the native 5303 raw format buffers coming directly from the camera sensor without 5304 any additional conversions or decrease in framerate. 5305 5306 See android.scaler.availableInputOutputFormatsMap for the full set of 5307 performance guarantees. 5308 </notes> 5309 </value> 5310 <value optional="true" id="0x32315659">YV12 5311 <notes>YCrCb 4:2:0 Planar</notes> 5312 </value> 5313 <value optional="true" id="0x11">YCrCb_420_SP 5314 <notes>NV21</notes> 5315 </value> 5316 <value id="0x22">IMPLEMENTATION_DEFINED 5317 <notes>System internal format, not application-accessible</notes> 5318 </value> 5319 <value id="0x23">YCbCr_420_888 5320 <notes>Flexible YUV420 Format</notes> 5321 </value> 5322 <value id="0x21">BLOB 5323 <notes>JPEG format</notes> 5324 </value> 5325 </enum> 5326 <description>The list of image formats that are supported by this 5327 camera device for output streams.</description> 5328 <details> 5329 All camera devices will support JPEG and YUV_420_888 formats. 5330 5331 When set to YUV_420_888, application can access the YUV420 data directly. 5332 </details> 5333 <hal_details> 5334 These format values are from HAL_PIXEL_FORMAT_* in 5335 system/core/include/system/graphics.h. 5336 5337 When IMPLEMENTATION_DEFINED is used, the platform 5338 gralloc module will select a format based on the usage flags provided 5339 by the camera HAL device and the other endpoint of the stream. It is 5340 usually used by preview and recording streams, where the application doesn't 5341 need access the image data. 5342 5343 YCbCr_420_888 format must be supported by the HAL. When an image stream 5344 needs CPU/application direct access, this format will be used. 5345 5346 The BLOB format must be supported by the HAL. This is used for the JPEG stream. 5347 5348 A RAW_OPAQUE buffer should contain only pixel data. It is strongly 5349 recommended that any information used by the camera device when 5350 processing images is fully expressed by the result metadata 5351 for that image buffer. 5352 </hal_details> 5353 <tag id="BC" /> 5354 </entry> 5355 <entry name="availableJpegMinDurations" type="int64" visibility="hidden" deprecated="true" 5356 container="array"> 5357 <array> 5358 <size>n</size> 5359 </array> 5360 <description>The minimum frame duration that is supported 5361 for each resolution in android.scaler.availableJpegSizes. 5362 </description> 5363 <units>Nanoseconds</units> 5364 <range>TODO: Remove property.</range> 5365 <details> 5366 This corresponds to the minimum steady-state frame duration when only 5367 that JPEG stream is active and captured in a burst, with all 5368 processing (typically in android.*.mode) set to FAST. 5369 5370 When multiple streams are configured, the minimum 5371 frame duration will be &gt;= max(individual stream min 5372 durations)</details> 5373 <tag id="BC" /> 5374 </entry> 5375 <entry name="availableJpegSizes" type="int32" visibility="hidden" 5376 deprecated="true" container="array" typedef="size"> 5377 <array> 5378 <size>n</size> 5379 <size>2</size> 5380 </array> 5381 <description>The JPEG resolutions that are supported by this camera device.</description> 5382 <range>TODO: Remove property.</range> 5383 <details> 5384 The resolutions are listed as `(width, height)` pairs. All camera devices will support 5385 sensor maximum resolution (defined by android.sensor.info.activeArraySize). 5386 </details> 5387 <hal_details> 5388 The HAL must include sensor maximum resolution 5389 (defined by android.sensor.info.activeArraySize), 5390 and should include half/quarter of sensor maximum resolution. 5391 </hal_details> 5392 <tag id="BC" /> 5393 </entry> 5394 <entry name="availableMaxDigitalZoom" type="float" visibility="public" 5395 hwlevel="legacy"> 5396 <description>The maximum ratio between both active area width 5397 and crop region width, and active area height and 5398 crop region height, for android.scaler.cropRegion. 5399 </description> 5400 <units>Zoom scale factor</units> 5401 <range>&gt;=1</range> 5402 <details> 5403 This represents the maximum amount of zooming possible by 5404 the camera device, or equivalently, the minimum cropping 5405 window size. 5406 5407 Crop regions that have a width or height that is smaller 5408 than this ratio allows will be rounded up to the minimum 5409 allowed size by the camera device. 5410 </details> 5411 <tag id="BC" /> 5412 </entry> 5413 <entry name="availableProcessedMinDurations" type="int64" visibility="hidden" deprecated="true" 5414 container="array"> 5415 <array> 5416 <size>n</size> 5417 </array> 5418 <description>For each available processed output size (defined in 5419 android.scaler.availableProcessedSizes), this property lists the 5420 minimum supportable frame duration for that size. 5421 </description> 5422 <units>Nanoseconds</units> 5423 <details> 5424 This should correspond to the frame duration when only that processed 5425 stream is active, with all processing (typically in android.*.mode) 5426 set to FAST. 5427 5428 When multiple streams are configured, the minimum frame duration will 5429 be &gt;= max(individual stream min durations). 5430 </details> 5431 <tag id="BC" /> 5432 </entry> 5433 <entry name="availableProcessedSizes" type="int32" visibility="hidden" 5434 deprecated="true" container="array" typedef="size"> 5435 <array> 5436 <size>n</size> 5437 <size>2</size> 5438 </array> 5439 <description>The resolutions available for use with 5440 processed output streams, such as YV12, NV12, and 5441 platform opaque YUV/RGB streams to the GPU or video 5442 encoders.</description> 5443 <details> 5444 The resolutions are listed as `(width, height)` pairs. 5445 5446 For a given use case, the actual maximum supported resolution 5447 may be lower than what is listed here, depending on the destination 5448 Surface for the image data. For example, for recording video, 5449 the video encoder chosen may have a maximum size limit (e.g. 1080p) 5450 smaller than what the camera (e.g. maximum resolution is 3264x2448) 5451 can provide. 5452 5453 Please reference the documentation for the image data destination to 5454 check if it limits the maximum size for image data. 5455 </details> 5456 <hal_details> 5457 For FULL capability devices (`android.info.supportedHardwareLevel == FULL`), 5458 the HAL must include all JPEG sizes listed in android.scaler.availableJpegSizes 5459 and each below resolution if it is smaller than or equal to the sensor 5460 maximum resolution (if they are not listed in JPEG sizes already): 5461 5462 * 240p (320 x 240) 5463 * 480p (640 x 480) 5464 * 720p (1280 x 720) 5465 * 1080p (1920 x 1080) 5466 5467 For LIMITED capability devices (`android.info.supportedHardwareLevel == LIMITED`), 5468 the HAL only has to list up to the maximum video size supported by the devices. 5469 </hal_details> 5470 <tag id="BC" /> 5471 </entry> 5472 <entry name="availableRawMinDurations" type="int64" deprecated="true" 5473 container="array"> 5474 <array> 5475 <size>n</size> 5476 </array> 5477 <description> 5478 For each available raw output size (defined in 5479 android.scaler.availableRawSizes), this property lists the minimum 5480 supportable frame duration for that size. 5481 </description> 5482 <units>Nanoseconds</units> 5483 <details> 5484 Should correspond to the frame duration when only the raw stream is 5485 active. 5486 5487 When multiple streams are configured, the minimum 5488 frame duration will be &gt;= max(individual stream min 5489 durations)</details> 5490 <tag id="BC" /> 5491 </entry> 5492 <entry name="availableRawSizes" type="int32" deprecated="true" 5493 container="array" typedef="size"> 5494 <array> 5495 <size>n</size> 5496 <size>2</size> 5497 </array> 5498 <description>The resolutions available for use with raw 5499 sensor output streams, listed as width, 5500 height</description> 5501 </entry> 5502 </static> 5503 <dynamic> 5504 <clone entry="android.scaler.cropRegion" kind="controls"> 5505 </clone> 5506 </dynamic> 5507 <static> 5508 <entry name="availableInputOutputFormatsMap" type="int32" visibility="hidden" 5509 typedef="reprocessFormatsMap"> 5510 <description>The mapping of image formats that are supported by this 5511 camera device for input streams, to their corresponding output formats. 5512 </description> 5513 <details> 5514 All camera devices with at least 1 5515 android.request.maxNumInputStreams will have at least one 5516 available input format. 5517 5518 The camera device will support the following map of formats, 5519 if its dependent capability (android.request.availableCapabilities) is supported: 5520 5521 Input Format | Output Format | Capability 5522 :-------------------------------------------------|:--------------------------------------------------|:---------- 5523 {@link android.graphics.ImageFormat#PRIVATE} | {@link android.graphics.ImageFormat#JPEG} | PRIVATE_REPROCESSING 5524 {@link android.graphics.ImageFormat#PRIVATE} | {@link android.graphics.ImageFormat#YUV_420_888} | PRIVATE_REPROCESSING 5525 {@link android.graphics.ImageFormat#YUV_420_888} | {@link android.graphics.ImageFormat#JPEG} | YUV_REPROCESSING 5526 {@link android.graphics.ImageFormat#YUV_420_888} | {@link android.graphics.ImageFormat#YUV_420_888} | YUV_REPROCESSING 5527 5528 PRIVATE refers to a device-internal format that is not directly application-visible. A 5529 PRIVATE input surface can be acquired by {@link android.media.ImageReader#newInstance} 5530 with {@link android.graphics.ImageFormat#PRIVATE} as the format. 5531 5532 For a PRIVATE_REPROCESSING-capable camera device, using the PRIVATE format as either input 5533 or output will never hurt maximum frame rate (i.e. {@link 5534 android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration 5535 getOutputStallDuration(ImageFormat.PRIVATE, size)} is always 0), 5536 5537 Attempting to configure an input stream with output streams not 5538 listed as available in this map is not valid. 5539 </details> 5540 <hal_details> 5541 For the formats, see `system/core/include/system/graphics.h` for a definition 5542 of the image format enumerations. The PRIVATE format refers to the 5543 HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED format. The HAL could determine 5544 the actual format by using the gralloc usage flags. 5545 For ZSL use case in particular, the HAL could choose appropriate format (partially 5546 processed YUV or RAW based format) by checking the format and GRALLOC_USAGE_HW_CAMERA_ZSL. 5547 See camera3.h for more details. 5548 5549 This value is encoded as a variable-size array-of-arrays. 5550 The inner array always contains `[format, length, ...]` where 5551 `...` has `length` elements. An inner array is followed by another 5552 inner array if the total metadata entry size hasn't yet been exceeded. 5553 5554 A code sample to read/write this encoding (with a device that 5555 supports reprocessing IMPLEMENTATION_DEFINED to YUV_420_888, and JPEG, 5556 and reprocessing YUV_420_888 to YUV_420_888 and JPEG): 5557 5558 // reading 5559 int32_t* contents = &entry.i32[0]; 5560 for (size_t i = 0; i < entry.count; ) { 5561 int32_t format = contents[i++]; 5562 int32_t length = contents[i++]; 5563 int32_t output_formats[length]; 5564 memcpy(&output_formats[0], &contents[i], 5565 length * sizeof(int32_t)); 5566 i += length; 5567 } 5568 5569 // writing (static example, PRIVATE_REPROCESSING + YUV_REPROCESSING) 5570 int32_t[] contents = { 5571 IMPLEMENTATION_DEFINED, 2, YUV_420_888, BLOB, 5572 YUV_420_888, 2, YUV_420_888, BLOB, 5573 }; 5574 update_camera_metadata_entry(metadata, index, &contents[0], 5575 sizeof(contents)/sizeof(contents[0]), &updated_entry); 5576 5577 If the HAL claims to support any of the capabilities listed in the 5578 above details, then it must also support all the input-output 5579 combinations listed for that capability. It can optionally support 5580 additional formats if it so chooses. 5581 </hal_details> 5582 <tag id="REPROC" /> 5583 </entry> 5584 <entry name="availableStreamConfigurations" type="int32" visibility="ndk_public" 5585 enum="true" container="array" typedef="streamConfiguration" hwlevel="legacy"> 5586 <array> 5587 <size>n</size> 5588 <size>4</size> 5589 </array> 5590 <enum> 5591 <value>OUTPUT</value> 5592 <value>INPUT</value> 5593 </enum> 5594 <description>The available stream configurations that this 5595 camera device supports 5596 (i.e. format, width, height, output/input stream). 5597 </description> 5598 <details> 5599 The configurations are listed as `(format, width, height, input?)` 5600 tuples. 5601 5602 For a given use case, the actual maximum supported resolution 5603 may be lower than what is listed here, depending on the destination 5604 Surface for the image data. For example, for recording video, 5605 the video encoder chosen may have a maximum size limit (e.g. 1080p) 5606 smaller than what the camera (e.g. maximum resolution is 3264x2448) 5607 can provide. 5608 5609 Please reference the documentation for the image data destination to 5610 check if it limits the maximum size for image data. 5611 5612 Not all output formats may be supported in a configuration with 5613 an input stream of a particular format. For more details, see 5614 android.scaler.availableInputOutputFormatsMap. 5615 5616 The following table describes the minimum required output stream 5617 configurations based on the hardware level 5618 (android.info.supportedHardwareLevel): 5619 5620 Format | Size | Hardware Level | Notes 5621 :-------------:|:--------------------------------------------:|:--------------:|:--------------: 5622 JPEG | android.sensor.info.activeArraySize | Any | 5623 JPEG | 1920x1080 (1080p) | Any | if 1080p <= activeArraySize 5624 JPEG | 1280x720 (720) | Any | if 720p <= activeArraySize 5625 JPEG | 640x480 (480p) | Any | if 480p <= activeArraySize 5626 JPEG | 320x240 (240p) | Any | if 240p <= activeArraySize 5627 YUV_420_888 | all output sizes available for JPEG | FULL | 5628 YUV_420_888 | all output sizes available for JPEG, up to the maximum video size | LIMITED | 5629 IMPLEMENTATION_DEFINED | same as YUV_420_888 | Any | 5630 5631 Refer to android.request.availableCapabilities for additional 5632 mandatory stream configurations on a per-capability basis. 5633 </details> 5634 <hal_details> 5635 It is recommended (but not mandatory) to also include half/quarter 5636 of sensor maximum resolution for JPEG formats (regardless of hardware 5637 level). 5638 5639 (The following is a rewording of the above required table): 5640 5641 For JPEG format, the sizes may be restricted by below conditions: 5642 5643 * The HAL may choose the aspect ratio of each Jpeg size to be one of well known ones 5644 (e.g. 4:3, 16:9, 3:2 etc.). If the sensor maximum resolution 5645 (defined by android.sensor.info.activeArraySize) has an aspect ratio other than these, 5646 it does not have to be included in the supported JPEG sizes. 5647 * Some hardware JPEG encoders may have pixel boundary alignment requirements, such as 5648 the dimensions being a multiple of 16. 5649 5650 Therefore, the maximum JPEG size may be smaller than sensor maximum resolution. 5651 However, the largest JPEG size must be as close as possible to the sensor maximum 5652 resolution given above constraints. It is required that after aspect ratio adjustments, 5653 additional size reduction due to other issues must be less than 3% in area. For example, 5654 if the sensor maximum resolution is 3280x2464, if the maximum JPEG size has aspect 5655 ratio 4:3, the JPEG encoder alignment requirement is 16, the maximum JPEG size will be 5656 3264x2448. 5657 5658 For FULL capability devices (`android.info.supportedHardwareLevel == FULL`), 5659 the HAL must include all YUV_420_888 sizes that have JPEG sizes listed 5660 here as output streams. 5661 5662 It must also include each below resolution if it is smaller than or 5663 equal to the sensor maximum resolution (for both YUV_420_888 and JPEG 5664 formats), as output streams: 5665 5666 * 240p (320 x 240) 5667 * 480p (640 x 480) 5668 * 720p (1280 x 720) 5669 * 1080p (1920 x 1080) 5670 5671 For LIMITED capability devices 5672 (`android.info.supportedHardwareLevel == LIMITED`), 5673 the HAL only has to list up to the maximum video size 5674 supported by the device. 5675 5676 Regardless of hardware level, every output resolution available for 5677 YUV_420_888 must also be available for IMPLEMENTATION_DEFINED. 5678 5679 This supercedes the following fields, which are now deprecated: 5680 5681 * availableFormats 5682 * available[Processed,Raw,Jpeg]Sizes 5683 </hal_details> 5684 </entry> 5685 <entry name="availableMinFrameDurations" type="int64" visibility="ndk_public" 5686 container="array" typedef="streamConfigurationDuration" hwlevel="legacy"> 5687 <array> 5688 <size>4</size> 5689 <size>n</size> 5690 </array> 5691 <description>This lists the minimum frame duration for each 5692 format/size combination. 5693 </description> 5694 <units>(format, width, height, ns) x n</units> 5695 <details> 5696 This should correspond to the frame duration when only that 5697 stream is active, with all processing (typically in android.*.mode) 5698 set to either OFF or FAST. 5699 5700 When multiple streams are used in a request, the minimum frame 5701 duration will be max(individual stream min durations). 5702 5703 The minimum frame duration of a stream (of a particular format, size) 5704 is the same regardless of whether the stream is input or output. 5705 5706 See android.sensor.frameDuration and 5707 android.scaler.availableStallDurations for more details about 5708 calculating the max frame rate. 5709 </details> 5710 <tag id="V1" /> 5711 </entry> 5712 <entry name="availableStallDurations" type="int64" visibility="ndk_public" 5713 container="array" typedef="streamConfigurationDuration" hwlevel="legacy"> 5714 <array> 5715 <size>4</size> 5716 <size>n</size> 5717 </array> 5718 <description>This lists the maximum stall duration for each 5719 output format/size combination. 5720 </description> 5721 <units>(format, width, height, ns) x n</units> 5722 <details> 5723 A stall duration is how much extra time would get added 5724 to the normal minimum frame duration for a repeating request 5725 that has streams with non-zero stall. 5726 5727 For example, consider JPEG captures which have the following 5728 characteristics: 5729 5730 * JPEG streams act like processed YUV streams in requests for which 5731 they are not included; in requests in which they are directly 5732 referenced, they act as JPEG streams. This is because supporting a 5733 JPEG stream requires the underlying YUV data to always be ready for 5734 use by a JPEG encoder, but the encoder will only be used (and impact 5735 frame duration) on requests that actually reference a JPEG stream. 5736 * The JPEG processor can run concurrently to the rest of the camera 5737 pipeline, but cannot process more than 1 capture at a time. 5738 5739 In other words, using a repeating YUV request would result 5740 in a steady frame rate (let's say it's 30 FPS). If a single 5741 JPEG request is submitted periodically, the frame rate will stay 5742 at 30 FPS (as long as we wait for the previous JPEG to return each 5743 time). If we try to submit a repeating YUV + JPEG request, then 5744 the frame rate will drop from 30 FPS. 5745 5746 In general, submitting a new request with a non-0 stall time 5747 stream will _not_ cause a frame rate drop unless there are still 5748 outstanding buffers for that stream from previous requests. 5749 5750 Submitting a repeating request with streams (call this `S`) 5751 is the same as setting the minimum frame duration from 5752 the normal minimum frame duration corresponding to `S`, added with 5753 the maximum stall duration for `S`. 5754 5755 If interleaving requests with and without a stall duration, 5756 a request will stall by the maximum of the remaining times 5757 for each can-stall stream with outstanding buffers. 5758 5759 This means that a stalling request will not have an exposure start 5760 until the stall has completed. 5761 5762 This should correspond to the stall duration when only that stream is 5763 active, with all processing (typically in android.*.mode) set to FAST 5764 or OFF. Setting any of the processing modes to HIGH_QUALITY 5765 effectively results in an indeterminate stall duration for all 5766 streams in a request (the regular stall calculation rules are 5767 ignored). 5768 5769 The following formats may always have a stall duration: 5770 5771 * {@link AIMAGE_FORMAT_JPEG} 5772 * {@link AIMAGE_FORMAT_RAW16} 5773 5774 The following formats will never have a stall duration: 5775 5776 * {@link AIMAGE_FORMAT_YUV_420_888} 5777 * {@link AIMAGE_FORMAT_RAW10} 5778 5779 All other formats may or may not have an allowed stall duration on 5780 a per-capability basis; refer to android.request.availableCapabilities 5781 for more details. 5782 5783 See android.sensor.frameDuration for more information about 5784 calculating the max frame rate (absent stalls). 5785 </details> 5786 <hal_details> 5787 If possible, it is recommended that all non-JPEG formats 5788 (such as RAW16) should not have a stall duration. RAW10, RAW12, RAW_OPAQUE 5789 and IMPLEMENTATION_DEFINED must not have stall durations. 5790 </hal_details> 5791 <tag id="V1" /> 5792 </entry> 5793 <entry name="streamConfigurationMap" type="int32" visibility="java_public" 5794 synthetic="true" typedef="streamConfigurationMap" 5795 hwlevel="legacy"> 5796 <description>The available stream configurations that this 5797 camera device supports; also includes the minimum frame durations 5798 and the stall durations for each format/size combination. 5799 </description> 5800 <details> 5801 All camera devices will support sensor maximum resolution (defined by 5802 android.sensor.info.activeArraySize) for the JPEG format. 5803 5804 For a given use case, the actual maximum supported resolution 5805 may be lower than what is listed here, depending on the destination 5806 Surface for the image data. For example, for recording video, 5807 the video encoder chosen may have a maximum size limit (e.g. 1080p) 5808 smaller than what the camera (e.g. maximum resolution is 3264x2448) 5809 can provide. 5810 5811 Please reference the documentation for the image data destination to 5812 check if it limits the maximum size for image data. 5813 5814 The following table describes the minimum required output stream 5815 configurations based on the hardware level 5816 (android.info.supportedHardwareLevel): 5817 5818 Format | Size | Hardware Level | Notes 5819 :-------------------------------------------------:|:--------------------------------------------:|:--------------:|:--------------: 5820 {@link android.graphics.ImageFormat#JPEG} | android.sensor.info.activeArraySize (*1) | Any | 5821 {@link android.graphics.ImageFormat#JPEG} | 1920x1080 (1080p) | Any | if 1080p <= activeArraySize 5822 {@link android.graphics.ImageFormat#JPEG} | 1280x720 (720p) | Any | if 720p <= activeArraySize 5823 {@link android.graphics.ImageFormat#JPEG} | 640x480 (480p) | Any | if 480p <= activeArraySize 5824 {@link android.graphics.ImageFormat#JPEG} | 320x240 (240p) | Any | if 240p <= activeArraySize 5825 {@link android.graphics.ImageFormat#YUV_420_888} | all output sizes available for JPEG | FULL | 5826 {@link android.graphics.ImageFormat#YUV_420_888} | all output sizes available for JPEG, up to the maximum video size | LIMITED | 5827 {@link android.graphics.ImageFormat#PRIVATE} | same as YUV_420_888 | Any | 5828 5829 Refer to android.request.availableCapabilities and {@link 5830 android.hardware.camera2.CameraDevice#createCaptureSession} for additional mandatory 5831 stream configurations on a per-capability basis. 5832 5833 *1: For JPEG format, the sizes may be restricted by below conditions: 5834 5835 * The HAL may choose the aspect ratio of each Jpeg size to be one of well known ones 5836 (e.g. 4:3, 16:9, 3:2 etc.). If the sensor maximum resolution 5837 (defined by android.sensor.info.activeArraySize) has an aspect ratio other than these, 5838 it does not have to be included in the supported JPEG sizes. 5839 * Some hardware JPEG encoders may have pixel boundary alignment requirements, such as 5840 the dimensions being a multiple of 16. 5841 Therefore, the maximum JPEG size may be smaller than sensor maximum resolution. 5842 However, the largest JPEG size will be as close as possible to the sensor maximum 5843 resolution given above constraints. It is required that after aspect ratio adjustments, 5844 additional size reduction due to other issues must be less than 3% in area. For example, 5845 if the sensor maximum resolution is 3280x2464, if the maximum JPEG size has aspect 5846 ratio 4:3, and the JPEG encoder alignment requirement is 16, the maximum JPEG size will be 5847 3264x2448. 5848 </details> 5849 <hal_details> 5850 Do not set this property directly 5851 (it is synthetic and will not be available at the HAL layer); 5852 set the android.scaler.availableStreamConfigurations instead. 5853 5854 Not all output formats may be supported in a configuration with 5855 an input stream of a particular format. For more details, see 5856 android.scaler.availableInputOutputFormatsMap. 5857 5858 It is recommended (but not mandatory) to also include half/quarter 5859 of sensor maximum resolution for JPEG formats (regardless of hardware 5860 level). 5861 5862 (The following is a rewording of the above required table): 5863 5864 The HAL must include sensor maximum resolution (defined by 5865 android.sensor.info.activeArraySize). 5866 5867 For FULL capability devices (`android.info.supportedHardwareLevel == FULL`), 5868 the HAL must include all YUV_420_888 sizes that have JPEG sizes listed 5869 here as output streams. 5870 5871 It must also include each below resolution if it is smaller than or 5872 equal to the sensor maximum resolution (for both YUV_420_888 and JPEG 5873 formats), as output streams: 5874 5875 * 240p (320 x 240) 5876 * 480p (640 x 480) 5877 * 720p (1280 x 720) 5878 * 1080p (1920 x 1080) 5879 5880 For LIMITED capability devices 5881 (`android.info.supportedHardwareLevel == LIMITED`), 5882 the HAL only has to list up to the maximum video size 5883 supported by the device. 5884 5885 Regardless of hardware level, every output resolution available for 5886 YUV_420_888 must also be available for IMPLEMENTATION_DEFINED. 5887 5888 This supercedes the following fields, which are now deprecated: 5889 5890 * availableFormats 5891 * available[Processed,Raw,Jpeg]Sizes 5892 </hal_details> 5893 </entry> 5894 <entry name="croppingType" type="byte" visibility="public" enum="true" 5895 hwlevel="legacy"> 5896 <enum> 5897 <value>CENTER_ONLY 5898 <notes> 5899 The camera device only supports centered crop regions. 5900 </notes> 5901 </value> 5902 <value>FREEFORM 5903 <notes> 5904 The camera device supports arbitrarily chosen crop regions. 5905 </notes> 5906 </value> 5907 </enum> 5908 <description>The crop type that this camera device supports.</description> 5909 <details> 5910 When passing a non-centered crop region (android.scaler.cropRegion) to a camera 5911 device that only supports CENTER_ONLY cropping, the camera device will move the 5912 crop region to the center of the sensor active array (android.sensor.info.activeArraySize) 5913 and keep the crop region width and height unchanged. The camera device will return the 5914 final used crop region in metadata result android.scaler.cropRegion. 5915 5916 Camera devices that support FREEFORM cropping will support any crop region that 5917 is inside of the active array. The camera device will apply the same crop region and 5918 return the final used crop region in capture result metadata android.scaler.cropRegion. 5919 5920 LEGACY capability devices will only support CENTER_ONLY cropping. 5921 </details> 5922 </entry> 5923 </static> 5924 </section> 5925 <section name="sensor"> 5926 <controls> 5927 <entry name="exposureTime" type="int64" visibility="public" hwlevel="full"> 5928 <description>Duration each pixel is exposed to 5929 light.</description> 5930 <units>Nanoseconds</units> 5931 <range>android.sensor.info.exposureTimeRange</range> 5932 <details>If the sensor can't expose this exact duration, it will shorten the 5933 duration exposed to the nearest possible value (rather than expose longer). 5934 The final exposure time used will be available in the output capture result. 5935 5936 This control is only effective if android.control.aeMode or android.control.mode is set to 5937 OFF; otherwise the auto-exposure algorithm will override this value. 5938 </details> 5939 <tag id="V1" /> 5940 </entry> 5941 <entry name="frameDuration" type="int64" visibility="public" hwlevel="full"> 5942 <description>Duration from start of frame exposure to 5943 start of next frame exposure.</description> 5944 <units>Nanoseconds</units> 5945 <range>See android.sensor.info.maxFrameDuration, 5946 ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS. The duration 5947 is capped to `max(duration, exposureTime + overhead)`.</range> 5948 <details> 5949 The maximum frame rate that can be supported by a camera subsystem is 5950 a function of many factors: 5951 5952 * Requested resolutions of output image streams 5953 * Availability of binning / skipping modes on the imager 5954 * The bandwidth of the imager interface 5955 * The bandwidth of the various ISP processing blocks 5956 5957 Since these factors can vary greatly between different ISPs and 5958 sensors, the camera abstraction tries to represent the bandwidth 5959 restrictions with as simple a model as possible. 5960 5961 The model presented has the following characteristics: 5962 5963 * The image sensor is always configured to output the smallest 5964 resolution possible given the application's requested output stream 5965 sizes. The smallest resolution is defined as being at least as large 5966 as the largest requested output stream size; the camera pipeline must 5967 never digitally upsample sensor data when the crop region covers the 5968 whole sensor. In general, this means that if only small output stream 5969 resolutions are configured, the sensor can provide a higher frame 5970 rate. 5971 * Since any request may use any or all the currently configured 5972 output streams, the sensor and ISP must be configured to support 5973 scaling a single capture to all the streams at the same time. This 5974 means the camera pipeline must be ready to produce the largest 5975 requested output size without any delay. Therefore, the overall 5976 frame rate of a given configured stream set is governed only by the 5977 largest requested stream resolution. 5978 * Using more than one output stream in a request does not affect the 5979 frame duration. 5980 * Certain format-streams may need to do additional background processing 5981 before data is consumed/produced by that stream. These processors 5982 can run concurrently to the rest of the camera pipeline, but 5983 cannot process more than 1 capture at a time. 5984 5985 The necessary information for the application, given the model above, 5986 is provided via 5987 {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}. 5988 These are used to determine the maximum frame rate / minimum frame 5989 duration that is possible for a given stream configuration. 5990 5991 Specifically, the application can use the following rules to 5992 determine the minimum frame duration it can request from the camera 5993 device: 5994 5995 1. Let the set of currently configured input/output streams 5996 be called `S`. 5997 1. Find the minimum frame durations for each stream in `S`, by looking 5998 it up in {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS} 5999 (with its respective size/format). Let this set of frame durations be 6000 called `F`. 6001 1. For any given request `R`, the minimum frame duration allowed 6002 for `R` is the maximum out of all values in `F`. Let the streams 6003 used in `R` be called `S_r`. 6004 6005 If none of the streams in `S_r` have a stall time (listed in {@link 6006 ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS} 6007 using its respective size/format), then the frame duration in `F` 6008 determines the steady state frame rate that the application will get 6009 if it uses `R` as a repeating request. Let this special kind of 6010 request be called `Rsimple`. 6011 6012 A repeating request `Rsimple` can be _occasionally_ interleaved 6013 by a single capture of a new request `Rstall` (which has at least 6014 one in-use stream with a non-0 stall time) and if `Rstall` has the 6015 same minimum frame duration this will not cause a frame rate loss 6016 if all buffers from the previous `Rstall` have already been 6017 delivered. 6018 6019 For more details about stalling, see 6020 {@link ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS}. 6021 6022 This control is only effective if android.control.aeMode or android.control.mode is set to 6023 OFF; otherwise the auto-exposure algorithm will override this value. 6024 </details> 6025 <hal_details> 6026 For more details about stalling, see 6027 android.scaler.availableStallDurations. 6028 </hal_details> 6029 <tag id="V1" /> 6030 </entry> 6031 <entry name="sensitivity" type="int32" visibility="public" hwlevel="full"> 6032 <description>The amount of gain applied to sensor data 6033 before processing.</description> 6034 <units>ISO arithmetic units</units> 6035 <range>android.sensor.info.sensitivityRange</range> 6036 <details> 6037 The sensitivity is the standard ISO sensitivity value, 6038 as defined in ISO 12232:2006. 6039 6040 The sensitivity must be within android.sensor.info.sensitivityRange, and 6041 if if it less than android.sensor.maxAnalogSensitivity, the camera device 6042 is guaranteed to use only analog amplification for applying the gain. 6043 6044 If the camera device cannot apply the exact sensitivity 6045 requested, it will reduce the gain to the nearest supported 6046 value. The final sensitivity used will be available in the 6047 output capture result. 6048 6049 This control is only effective if android.control.aeMode or android.control.mode is set to 6050 OFF; otherwise the auto-exposure algorithm will override this value. 6051 </details> 6052 <hal_details>ISO 12232:2006 REI method is acceptable.</hal_details> 6053 <tag id="V1" /> 6054 </entry> 6055 </controls> 6056 <static> 6057 <namespace name="info"> 6058 <entry name="activeArraySize" type="int32" visibility="public" 6059 type_notes="Four ints defining the active pixel rectangle" 6060 container="array" typedef="rectangle" hwlevel="legacy"> 6061 <array> 6062 <size>4</size> 6063 </array> 6064 <description> 6065 The area of the image sensor which corresponds to active pixels after any geometric 6066 distortion correction has been applied. 6067 </description> 6068 <units>Pixel coordinates on the image sensor</units> 6069 <details> 6070 This is the rectangle representing the size of the active region of the sensor (i.e. 6071 the region that actually receives light from the scene) after any geometric correction 6072 has been applied, and should be treated as the maximum size in pixels of any of the 6073 image output formats aside from the raw formats. 6074 6075 This rectangle is defined relative to the full pixel array; (0,0) is the top-left of 6076 the full pixel array, and the size of the full pixel array is given by 6077 android.sensor.info.pixelArraySize. 6078 6079 The data representation is int[4], which maps to (left, top, width, height). 6080 6081 The coordinate system for most other keys that list pixel coordinates, including 6082 android.scaler.cropRegion, is defined relative to the active array rectangle given in 6083 this field, with `(0, 0)` being the top-left of this rectangle. 6084 6085 The active array may be smaller than the full pixel array, since the full array may 6086 include black calibration pixels or other inactive regions, and geometric correction 6087 resulting in scaling or cropping may have been applied. 6088 </details> 6089 <hal_details> 6090 This array contains `(xmin, ymin, width, height)`. The `(xmin, ymin)` must be 6091 &gt;= `(0,0)`. 6092 The `(width, height)` must be &lt;= `android.sensor.info.pixelArraySize`. 6093 </hal_details> 6094 <tag id="RAW" /> 6095 </entry> 6096 <entry name="sensitivityRange" type="int32" visibility="public" 6097 type_notes="Range of supported sensitivities" 6098 container="array" typedef="rangeInt" 6099 hwlevel="full"> 6100 <array> 6101 <size>2</size> 6102 </array> 6103 <description>Range of sensitivities for android.sensor.sensitivity supported by this 6104 camera device.</description> 6105 <range>Min <= 100, Max &gt;= 800</range> 6106 <details> 6107 The values are the standard ISO sensitivity values, 6108 as defined in ISO 12232:2006. 6109 </details> 6110 6111 <tag id="BC" /> 6112 <tag id="V1" /> 6113 </entry> 6114 <entry name="colorFilterArrangement" type="byte" visibility="public" enum="true" 6115 hwlevel="full"> 6116 <enum> 6117 <value>RGGB</value> 6118 <value>GRBG</value> 6119 <value>GBRG</value> 6120 <value>BGGR</value> 6121 <value>RGB 6122 <notes>Sensor is not Bayer; output has 3 16-bit 6123 values for each pixel, instead of just 1 16-bit value 6124 per pixel.</notes></value> 6125 </enum> 6126 <description>The arrangement of color filters on sensor; 6127 represents the colors in the top-left 2x2 section of 6128 the sensor, in reading order.</description> 6129 <tag id="RAW" /> 6130 </entry> 6131 <entry name="exposureTimeRange" type="int64" visibility="public" 6132 type_notes="nanoseconds" container="array" typedef="rangeLong" 6133 hwlevel="full"> 6134 <array> 6135 <size>2</size> 6136 </array> 6137 <description>The range of image exposure times for android.sensor.exposureTime supported 6138 by this camera device. 6139 </description> 6140 <units>Nanoseconds</units> 6141 <range>The minimum exposure time will be less than 100 us. For FULL 6142 capability devices (android.info.supportedHardwareLevel == FULL), 6143 the maximum exposure time will be greater than 100ms.</range> 6144 <hal_details>For FULL capability devices (android.info.supportedHardwareLevel == FULL), 6145 The maximum of the range SHOULD be at least 1 second (1e9), MUST be at least 6146 100ms. 6147 </hal_details> 6148 <tag id="V1" /> 6149 </entry> 6150 <entry name="maxFrameDuration" type="int64" visibility="public" 6151 hwlevel="full"> 6152 <description>The maximum possible frame duration (minimum frame rate) for 6153 android.sensor.frameDuration that is supported this camera device.</description> 6154 <units>Nanoseconds</units> 6155 <range>For FULL capability devices 6156 (android.info.supportedHardwareLevel == FULL), at least 100ms. 6157 </range> 6158 <details>Attempting to use frame durations beyond the maximum will result in the frame 6159 duration being clipped to the maximum. See that control for a full definition of frame 6160 durations. 6161 6162 Refer to {@link 6163 ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS} 6164 for the minimum frame duration values. 6165 </details> 6166 <hal_details> 6167 For FULL capability devices (android.info.supportedHardwareLevel == FULL), 6168 The maximum of the range SHOULD be at least 6169 1 second (1e9), MUST be at least 100ms (100e6). 6170 6171 android.sensor.info.maxFrameDuration must be greater or 6172 equal to the android.sensor.info.exposureTimeRange max 6173 value (since exposure time overrides frame duration). 6174 6175 Available minimum frame durations for JPEG must be no greater 6176 than that of the YUV_420_888/IMPLEMENTATION_DEFINED 6177 minimum frame durations (for that respective size). 6178 6179 Since JPEG processing is considered offline and can take longer than 6180 a single uncompressed capture, refer to 6181 android.scaler.availableStallDurations 6182 for details about encoding this scenario. 6183 </hal_details> 6184 <tag id="V1" /> 6185 </entry> 6186 <entry name="physicalSize" type="float" visibility="public" 6187 type_notes="width x height" 6188 container="array" typedef="sizeF" hwlevel="legacy"> 6189 <array> 6190 <size>2</size> 6191 </array> 6192 <description>The physical dimensions of the full pixel 6193 array.</description> 6194 <units>Millimeters</units> 6195 <details>This is the physical size of the sensor pixel 6196 array defined by android.sensor.info.pixelArraySize. 6197 </details> 6198 <hal_details>Needed for FOV calculation for old API</hal_details> 6199 <tag id="V1" /> 6200 <tag id="BC" /> 6201 </entry> 6202 <entry name="pixelArraySize" type="int32" visibility="public" 6203 container="array" typedef="size" hwlevel="legacy"> 6204 <array> 6205 <size>2</size> 6206 </array> 6207 <description>Dimensions of the full pixel array, possibly 6208 including black calibration pixels.</description> 6209 <units>Pixels</units> 6210 <details>The pixel count of the full pixel array of the image sensor, which covers 6211 android.sensor.info.physicalSize area. This represents the full pixel dimensions of 6212 the raw buffers produced by this sensor. 6213 6214 If a camera device supports raw sensor formats, either this or 6215 android.sensor.info.preCorrectionActiveArraySize is the maximum dimensions for the raw 6216 output formats listed in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS (this depends on 6217 whether or not the image sensor returns buffers containing pixels that are not 6218 part of the active array region for blacklevel calibration or other purposes). 6219 6220 Some parts of the full pixel array may not receive light from the scene, 6221 or be otherwise inactive. The android.sensor.info.preCorrectionActiveArraySize key 6222 defines the rectangle of active pixels that will be included in processed image 6223 formats. 6224 </details> 6225 <tag id="RAW" /> 6226 <tag id="BC" /> 6227 </entry> 6228 <entry name="whiteLevel" type="int32" visibility="public"> 6229 <description> 6230 Maximum raw value output by sensor. 6231 </description> 6232 <range>&gt; 255 (8-bit output)</range> 6233 <details> 6234 This specifies the fully-saturated encoding level for the raw 6235 sample values from the sensor. This is typically caused by the 6236 sensor becoming highly non-linear or clipping. The minimum for 6237 each channel is specified by the offset in the 6238 android.sensor.blackLevelPattern key. 6239 6240 The white level is typically determined either by sensor bit depth 6241 (8-14 bits is expected), or by the point where the sensor response 6242 becomes too non-linear to be useful. The default value for this is 6243 maximum representable value for a 16-bit raw sample (2^16 - 1). 6244 6245 The white level values of captured images may vary for different 6246 capture settings (e.g., android.sensor.sensitivity). This key 6247 represents a coarse approximation for such case. It is recommended 6248 to use android.sensor.dynamicWhiteLevel for captures when supported 6249 by the camera device, which provides more accurate white level values. 6250 </details> 6251 <hal_details> 6252 The full bit depth of the sensor must be available in the raw data, 6253 so the value for linear sensors should not be significantly lower 6254 than maximum raw value supported, i.e. 2^(sensor bits per pixel). 6255 </hal_details> 6256 <tag id="RAW" /> 6257 </entry> 6258 <entry name="timestampSource" type="byte" visibility="public" 6259 enum="true" hwlevel="legacy"> 6260 <enum> 6261 <value>UNKNOWN 6262 <notes> 6263 Timestamps from android.sensor.timestamp are in nanoseconds and monotonic, 6264 but can not be compared to timestamps from other subsystems 6265 (e.g. accelerometer, gyro etc.), or other instances of the same or different 6266 camera devices in the same system. Timestamps between streams and results for 6267 a single camera instance are comparable, and the timestamps for all buffers 6268 and the result metadata generated by a single capture are identical. 6269 </notes> 6270 </value> 6271 <value>REALTIME 6272 <notes> 6273 Timestamps from android.sensor.timestamp are in the same timebase as 6274 [elapsedRealtimeNanos](https://developer.android.com/reference/android/os/SystemClock.html#elapsedRealtimeNanos) 6275 (or CLOCK_BOOTTIME), and they can be compared to other timestamps using that base. 6276 </notes> 6277 </value> 6278 </enum> 6279 <description>The time base source for sensor capture start timestamps.</description> 6280 <details> 6281 The timestamps provided for captures are always in nanoseconds and monotonic, but 6282 may not based on a time source that can be compared to other system time sources. 6283 6284 This characteristic defines the source for the timestamps, and therefore whether they 6285 can be compared against other system time sources/timestamps. 6286 </details> 6287 <tag id="V1" /> 6288 </entry> 6289 <entry name="lensShadingApplied" type="byte" visibility="public" enum="true" 6290 typedef="boolean"> 6291 <enum> 6292 <value>FALSE</value> 6293 <value>TRUE</value> 6294 </enum> 6295 <description>Whether the RAW images output from this camera device are subject to 6296 lens shading correction.</description> 6297 <details> 6298 If TRUE, all images produced by the camera device in the RAW image formats will 6299 have lens shading correction already applied to it. If FALSE, the images will 6300 not be adjusted for lens shading correction. 6301 See android.request.maxNumOutputRaw for a list of RAW image formats. 6302 6303 This key will be `null` for all devices do not report this information. 6304 Devices with RAW capability will always report this information in this key. 6305 </details> 6306 </entry> 6307 <entry name="preCorrectionActiveArraySize" type="int32" visibility="public" 6308 type_notes="Four ints defining the active pixel rectangle" container="array" 6309 typedef="rectangle" hwlevel="legacy"> 6310 <array> 6311 <size>4</size> 6312 </array> 6313 <description> 6314 The area of the image sensor which corresponds to active pixels prior to the 6315 application of any geometric distortion correction. 6316 </description> 6317 <units>Pixel coordinates on the image sensor</units> 6318 <details> 6319 The data representation is int[4], which maps to (left, top, width, height). 6320 6321 This is the rectangle representing the size of the active region of the sensor (i.e. 6322 the region that actually receives light from the scene) before any geometric correction 6323 has been applied, and should be treated as the active region rectangle for any of the 6324 raw formats. All metadata associated with raw processing (e.g. the lens shading 6325 correction map, and radial distortion fields) treats the top, left of this rectangle as 6326 the origin, (0,0). 6327 6328 The size of this region determines the maximum field of view and the maximum number of 6329 pixels that an image from this sensor can contain, prior to the application of 6330 geometric distortion correction. The effective maximum pixel dimensions of a 6331 post-distortion-corrected image is given by the android.sensor.info.activeArraySize 6332 field, and the effective maximum field of view for a post-distortion-corrected image 6333 can be calculated by applying the geometric distortion correction fields to this 6334 rectangle, and cropping to the rectangle given in android.sensor.info.activeArraySize. 6335 6336 E.g. to calculate position of a pixel, (x,y), in a processed YUV output image with the 6337 dimensions in android.sensor.info.activeArraySize given the position of a pixel, 6338 (x', y'), in the raw pixel array with dimensions give in 6339 android.sensor.info.pixelArraySize: 6340 6341 1. Choose a pixel (x', y') within the active array region of the raw buffer given in 6342 android.sensor.info.preCorrectionActiveArraySize, otherwise this pixel is considered 6343 to be outside of the FOV, and will not be shown in the processed output image. 6344 1. Apply geometric distortion correction to get the post-distortion pixel coordinate, 6345 (x_i, y_i). When applying geometric correction metadata, note that metadata for raw 6346 buffers is defined relative to the top, left of the 6347 android.sensor.info.preCorrectionActiveArraySize rectangle. 6348 1. If the resulting corrected pixel coordinate is within the region given in 6349 android.sensor.info.activeArraySize, then the position of this pixel in the 6350 processed output image buffer is `(x_i - activeArray.left, y_i - activeArray.top)`, 6351 when the top, left coordinate of that buffer is treated as (0, 0). 6352 6353 Thus, for pixel x',y' = (25, 25) on a sensor where android.sensor.info.pixelArraySize 6354 is (100,100), android.sensor.info.preCorrectionActiveArraySize is (10, 10, 100, 100), 6355 android.sensor.info.activeArraySize is (20, 20, 80, 80), and the geometric distortion 6356 correction doesn't change the pixel coordinate, the resulting pixel selected in 6357 pixel coordinates would be x,y = (25, 25) relative to the top,left of the raw buffer 6358 with dimensions given in android.sensor.info.pixelArraySize, and would be (5, 5) 6359 relative to the top,left of post-processed YUV output buffer with dimensions given in 6360 android.sensor.info.activeArraySize. 6361 6362 The currently supported fields that correct for geometric distortion are: 6363 6364 1. android.lens.radialDistortion. 6365 6366 If all of the geometric distortion fields are no-ops, this rectangle will be the same 6367 as the post-distortion-corrected rectangle given in 6368 android.sensor.info.activeArraySize. 6369 6370 This rectangle is defined relative to the full pixel array; (0,0) is the top-left of 6371 the full pixel array, and the size of the full pixel array is given by 6372 android.sensor.info.pixelArraySize. 6373 6374 The pre-correction active array may be smaller than the full pixel array, since the 6375 full array may include black calibration pixels or other inactive regions. 6376 </details> 6377 <hal_details> 6378 This array contains `(xmin, ymin, width, height)`. The `(xmin, ymin)` must be 6379 &gt;= `(0,0)`. 6380 The `(width, height)` must be &lt;= `android.sensor.info.pixelArraySize`. 6381 6382 If omitted by the HAL implementation, the camera framework will assume that this is 6383 the same as the post-correction active array region given in 6384 android.sensor.info.activeArraySize. 6385 </hal_details> 6386 <tag id="RAW" /> 6387 </entry> 6388 </namespace> 6389 <entry name="referenceIlluminant1" type="byte" visibility="public" 6390 enum="true"> 6391 <enum> 6392 <value id="1">DAYLIGHT</value> 6393 <value id="2">FLUORESCENT</value> 6394 <value id="3">TUNGSTEN 6395 <notes>Incandescent light</notes> 6396 </value> 6397 <value id="4">FLASH</value> 6398 <value id="9">FINE_WEATHER</value> 6399 <value id="10">CLOUDY_WEATHER</value> 6400 <value id="11">SHADE</value> 6401 <value id="12">DAYLIGHT_FLUORESCENT 6402 <notes>D 5700 - 7100K</notes> 6403 </value> 6404 <value id="13">DAY_WHITE_FLUORESCENT 6405 <notes>N 4600 - 5400K</notes> 6406 </value> 6407 <value id="14">COOL_WHITE_FLUORESCENT 6408 <notes>W 3900 - 4500K</notes> 6409 </value> 6410 <value id="15">WHITE_FLUORESCENT 6411 <notes>WW 3200 - 3700K</notes> 6412 </value> 6413 <value id="17">STANDARD_A</value> 6414 <value id="18">STANDARD_B</value> 6415 <value id="19">STANDARD_C</value> 6416 <value id="20">D55</value> 6417 <value id="21">D65</value> 6418 <value id="22">D75</value> 6419 <value id="23">D50</value> 6420 <value id="24">ISO_STUDIO_TUNGSTEN</value> 6421 </enum> 6422 <description> 6423 The standard reference illuminant used as the scene light source when 6424 calculating the android.sensor.colorTransform1, 6425 android.sensor.calibrationTransform1, and 6426 android.sensor.forwardMatrix1 matrices. 6427 </description> 6428 <details> 6429 The values in this key correspond to the values defined for the 6430 EXIF LightSource tag. These illuminants are standard light sources 6431 that are often used calibrating camera devices. 6432 6433 If this key is present, then android.sensor.colorTransform1, 6434 android.sensor.calibrationTransform1, and 6435 android.sensor.forwardMatrix1 will also be present. 6436 6437 Some devices may choose to provide a second set of calibration 6438 information for improved quality, including 6439 android.sensor.referenceIlluminant2 and its corresponding matrices. 6440 </details> 6441 <hal_details> 6442 The first reference illuminant (android.sensor.referenceIlluminant1) 6443 and corresponding matrices must be present to support the RAW capability 6444 and DNG output. 6445 6446 When producing raw images with a color profile that has only been 6447 calibrated against a single light source, it is valid to omit 6448 android.sensor.referenceIlluminant2 along with the 6449 android.sensor.colorTransform2, android.sensor.calibrationTransform2, 6450 and android.sensor.forwardMatrix2 matrices. 6451 6452 If only android.sensor.referenceIlluminant1 is included, it should be 6453 chosen so that it is representative of typical scene lighting. In 6454 general, D50 or DAYLIGHT will be chosen for this case. 6455 6456 If both android.sensor.referenceIlluminant1 and 6457 android.sensor.referenceIlluminant2 are included, they should be 6458 chosen to represent the typical range of scene lighting conditions. 6459 In general, low color temperature illuminant such as Standard-A will 6460 be chosen for the first reference illuminant and a higher color 6461 temperature illuminant such as D65 will be chosen for the second 6462 reference illuminant. 6463 </hal_details> 6464 <tag id="RAW" /> 6465 </entry> 6466 <entry name="referenceIlluminant2" type="byte" visibility="public"> 6467 <description> 6468 The standard reference illuminant used as the scene light source when 6469 calculating the android.sensor.colorTransform2, 6470 android.sensor.calibrationTransform2, and 6471 android.sensor.forwardMatrix2 matrices. 6472 </description> 6473 <range>Any value listed in android.sensor.referenceIlluminant1</range> 6474 <details> 6475 See android.sensor.referenceIlluminant1 for more details. 6476 6477 If this key is present, then android.sensor.colorTransform2, 6478 android.sensor.calibrationTransform2, and 6479 android.sensor.forwardMatrix2 will also be present. 6480 </details> 6481 <tag id="RAW" /> 6482 </entry> 6483 <entry name="calibrationTransform1" type="rational" 6484 visibility="public" optional="true" 6485 type_notes="3x3 matrix in row-major-order" container="array" 6486 typedef="colorSpaceTransform"> 6487 <array> 6488 <size>3</size> 6489 <size>3</size> 6490 </array> 6491 <description> 6492 A per-device calibration transform matrix that maps from the 6493 reference sensor colorspace to the actual device sensor colorspace. 6494 </description> 6495 <details> 6496 This matrix is used to correct for per-device variations in the 6497 sensor colorspace, and is used for processing raw buffer data. 6498 6499 The matrix is expressed as a 3x3 matrix in row-major-order, and 6500 contains a per-device calibration transform that maps colors 6501 from reference sensor color space (i.e. the "golden module" 6502 colorspace) into this camera device's native sensor color 6503 space under the first reference illuminant 6504 (android.sensor.referenceIlluminant1). 6505 </details> 6506 <tag id="RAW" /> 6507 </entry> 6508 <entry name="calibrationTransform2" type="rational" 6509 visibility="public" optional="true" 6510 type_notes="3x3 matrix in row-major-order" container="array" 6511 typedef="colorSpaceTransform"> 6512 <array> 6513 <size>3</size> 6514 <size>3</size> 6515 </array> 6516 <description> 6517 A per-device calibration transform matrix that maps from the 6518 reference sensor colorspace to the actual device sensor colorspace 6519 (this is the colorspace of the raw buffer data). 6520 </description> 6521 <details> 6522 This matrix is used to correct for per-device variations in the 6523 sensor colorspace, and is used for processing raw buffer data. 6524 6525 The matrix is expressed as a 3x3 matrix in row-major-order, and 6526 contains a per-device calibration transform that maps colors 6527 from reference sensor color space (i.e. the "golden module" 6528 colorspace) into this camera device's native sensor color 6529 space under the second reference illuminant 6530 (android.sensor.referenceIlluminant2). 6531 6532 This matrix will only be present if the second reference 6533 illuminant is present. 6534 </details> 6535 <tag id="RAW" /> 6536 </entry> 6537 <entry name="colorTransform1" type="rational" 6538 visibility="public" optional="true" 6539 type_notes="3x3 matrix in row-major-order" container="array" 6540 typedef="colorSpaceTransform"> 6541 <array> 6542 <size>3</size> 6543 <size>3</size> 6544 </array> 6545 <description> 6546 A matrix that transforms color values from CIE XYZ color space to 6547 reference sensor color space. 6548 </description> 6549 <details> 6550 This matrix is used to convert from the standard CIE XYZ color 6551 space to the reference sensor colorspace, and is used when processing 6552 raw buffer data. 6553 6554 The matrix is expressed as a 3x3 matrix in row-major-order, and 6555 contains a color transform matrix that maps colors from the CIE 6556 XYZ color space to the reference sensor color space (i.e. the 6557 "golden module" colorspace) under the first reference illuminant 6558 (android.sensor.referenceIlluminant1). 6559 6560 The white points chosen in both the reference sensor color space 6561 and the CIE XYZ colorspace when calculating this transform will 6562 match the standard white point for the first reference illuminant 6563 (i.e. no chromatic adaptation will be applied by this transform). 6564 </details> 6565 <tag id="RAW" /> 6566 </entry> 6567 <entry name="colorTransform2" type="rational" 6568 visibility="public" optional="true" 6569 type_notes="3x3 matrix in row-major-order" container="array" 6570 typedef="colorSpaceTransform"> 6571 <array> 6572 <size>3</size> 6573 <size>3</size> 6574 </array> 6575 <description> 6576 A matrix that transforms color values from CIE XYZ color space to 6577 reference sensor color space. 6578 </description> 6579 <details> 6580 This matrix is used to convert from the standard CIE XYZ color 6581 space to the reference sensor colorspace, and is used when processing 6582 raw buffer data. 6583 6584 The matrix is expressed as a 3x3 matrix in row-major-order, and 6585 contains a color transform matrix that maps colors from the CIE 6586 XYZ color space to the reference sensor color space (i.e. the 6587 "golden module" colorspace) under the second reference illuminant 6588 (android.sensor.referenceIlluminant2). 6589 6590 The white points chosen in both the reference sensor color space 6591 and the CIE XYZ colorspace when calculating this transform will 6592 match the standard white point for the second reference illuminant 6593 (i.e. no chromatic adaptation will be applied by this transform). 6594 6595 This matrix will only be present if the second reference 6596 illuminant is present. 6597 </details> 6598 <tag id="RAW" /> 6599 </entry> 6600 <entry name="forwardMatrix1" type="rational" 6601 visibility="public" optional="true" 6602 type_notes="3x3 matrix in row-major-order" container="array" 6603 typedef="colorSpaceTransform"> 6604 <array> 6605 <size>3</size> 6606 <size>3</size> 6607 </array> 6608 <description> 6609 A matrix that transforms white balanced camera colors from the reference 6610 sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint. 6611 </description> 6612 <details> 6613 This matrix is used to convert to the standard CIE XYZ colorspace, and 6614 is used when processing raw buffer data. 6615 6616 This matrix is expressed as a 3x3 matrix in row-major-order, and contains 6617 a color transform matrix that maps white balanced colors from the 6618 reference sensor color space to the CIE XYZ color space with a D50 white 6619 point. 6620 6621 Under the first reference illuminant (android.sensor.referenceIlluminant1) 6622 this matrix is chosen so that the standard white point for this reference 6623 illuminant in the reference sensor colorspace is mapped to D50 in the 6624 CIE XYZ colorspace. 6625 </details> 6626 <tag id="RAW" /> 6627 </entry> 6628 <entry name="forwardMatrix2" type="rational" 6629 visibility="public" optional="true" 6630 type_notes="3x3 matrix in row-major-order" container="array" 6631 typedef="colorSpaceTransform"> 6632 <array> 6633 <size>3</size> 6634 <size>3</size> 6635 </array> 6636 <description> 6637 A matrix that transforms white balanced camera colors from the reference 6638 sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint. 6639 </description> 6640 <details> 6641 This matrix is used to convert to the standard CIE XYZ colorspace, and 6642 is used when processing raw buffer data. 6643 6644 This matrix is expressed as a 3x3 matrix in row-major-order, and contains 6645 a color transform matrix that maps white balanced colors from the 6646 reference sensor color space to the CIE XYZ color space with a D50 white 6647 point. 6648 6649 Under the second reference illuminant (android.sensor.referenceIlluminant2) 6650 this matrix is chosen so that the standard white point for this reference 6651 illuminant in the reference sensor colorspace is mapped to D50 in the 6652 CIE XYZ colorspace. 6653 6654 This matrix will only be present if the second reference 6655 illuminant is present. 6656 </details> 6657 <tag id="RAW" /> 6658 </entry> 6659 <entry name="baseGainFactor" type="rational" 6660 optional="true"> 6661 <description>Gain factor from electrons to raw units when 6662 ISO=100</description> 6663 <tag id="FUTURE" /> 6664 </entry> 6665 <entry name="blackLevelPattern" type="int32" visibility="public" 6666 optional="true" type_notes="2x2 raw count block" container="array" 6667 typedef="blackLevelPattern"> 6668 <array> 6669 <size>4</size> 6670 </array> 6671 <description> 6672 A fixed black level offset for each of the color filter arrangement 6673 (CFA) mosaic channels. 6674 </description> 6675 <range>&gt;= 0 for each.</range> 6676 <details> 6677 This key specifies the zero light value for each of the CFA mosaic 6678 channels in the camera sensor. The maximal value output by the 6679 sensor is represented by the value in android.sensor.info.whiteLevel. 6680 6681 The values are given in the same order as channels listed for the CFA 6682 layout key (see android.sensor.info.colorFilterArrangement), i.e. the 6683 nth value given corresponds to the black level offset for the nth 6684 color channel listed in the CFA. 6685 6686 The black level values of captured images may vary for different 6687 capture settings (e.g., android.sensor.sensitivity). This key 6688 represents a coarse approximation for such case. It is recommended to 6689 use android.sensor.dynamicBlackLevel or use pixels from 6690 android.sensor.opticalBlackRegions directly for captures when 6691 supported by the camera device, which provides more accurate black 6692 level values. For raw capture in particular, it is recommended to use 6693 pixels from android.sensor.opticalBlackRegions to calculate black 6694 level values for each frame. 6695 </details> 6696 <hal_details> 6697 The values are given in row-column scan order, with the first value 6698 corresponding to the element of the CFA in row=0, column=0. 6699 </hal_details> 6700 <tag id="RAW" /> 6701 </entry> 6702 <entry name="maxAnalogSensitivity" type="int32" visibility="public" 6703 optional="true" hwlevel="full"> 6704 <description>Maximum sensitivity that is implemented 6705 purely through analog gain.</description> 6706 <details>For android.sensor.sensitivity values less than or 6707 equal to this, all applied gain must be analog. For 6708 values above this, the gain applied can be a mix of analog and 6709 digital.</details> 6710 <tag id="V1" /> 6711 <tag id="FULL" /> 6712 </entry> 6713 <entry name="orientation" type="int32" visibility="public" 6714 hwlevel="legacy"> 6715 <description>Clockwise angle through which the output image needs to be rotated to be 6716 upright on the device screen in its native orientation. 6717 </description> 6718 <units>Degrees of clockwise rotation; always a multiple of 6719 90</units> 6720 <range>0, 90, 180, 270</range> 6721 <details> 6722 Also defines the direction of rolling shutter readout, which is from top to bottom in 6723 the sensor's coordinate system. 6724 </details> 6725 <tag id="BC" /> 6726 </entry> 6727 <entry name="profileHueSatMapDimensions" type="int32" 6728 visibility="system" optional="true" 6729 type_notes="Number of samples for hue, saturation, and value" 6730 container="array"> 6731 <array> 6732 <size>3</size> 6733 </array> 6734 <description> 6735 The number of input samples for each dimension of 6736 android.sensor.profileHueSatMap. 6737 </description> 6738 <range> 6739 Hue &gt;= 1, 6740 Saturation &gt;= 2, 6741 Value &gt;= 1 6742 </range> 6743 <details> 6744 The number of input samples for the hue, saturation, and value 6745 dimension of android.sensor.profileHueSatMap. The order of the 6746 dimensions given is hue, saturation, value; where hue is the 0th 6747 element. 6748 </details> 6749 <tag id="RAW" /> 6750 </entry> 6751 </static> 6752 <dynamic> 6753 <clone entry="android.sensor.exposureTime" kind="controls"> 6754 </clone> 6755 <clone entry="android.sensor.frameDuration" 6756 kind="controls"></clone> 6757 <clone entry="android.sensor.sensitivity" kind="controls"> 6758 </clone> 6759 <entry name="timestamp" type="int64" visibility="public" 6760 hwlevel="legacy"> 6761 <description>Time at start of exposure of first 6762 row of the image sensor active array, in nanoseconds.</description> 6763 <units>Nanoseconds</units> 6764 <range>&gt; 0</range> 6765 <details>The timestamps are also included in all image 6766 buffers produced for the same capture, and will be identical 6767 on all the outputs. 6768 6769 When android.sensor.info.timestampSource `==` UNKNOWN, 6770 the timestamps measure time since an unspecified starting point, 6771 and are monotonically increasing. They can be compared with the 6772 timestamps for other captures from the same camera device, but are 6773 not guaranteed to be comparable to any other time source. 6774 6775 When android.sensor.info.timestampSource `==` REALTIME, the 6776 timestamps measure time in the same timebase as 6777 [elapsedRealtimeNanos](https://developer.android.com/reference/android/os/SystemClock.html#elapsedRealtimeNanos) 6778 (or CLOCK_BOOTTIME), and they can 6779 be compared to other timestamps from other subsystems that 6780 are using that base. 6781 6782 For reprocessing, the timestamp will match the start of exposure of 6783 the input image, i.e. {@link CaptureResult#SENSOR_TIMESTAMP the 6784 timestamp} in the TotalCaptureResult that was used to create the 6785 reprocess capture request. 6786 </details> 6787 <hal_details> 6788 All timestamps must be in reference to the kernel's 6789 CLOCK_BOOTTIME monotonic clock, which properly accounts for 6790 time spent asleep. This allows for synchronization with 6791 sensors that continue to operate while the system is 6792 otherwise asleep. 6793 6794 If android.sensor.info.timestampSource `==` REALTIME, 6795 The timestamp must be synchronized with the timestamps from other 6796 sensor subsystems that are using the same timebase. 6797 6798 For reprocessing, the input image's start of exposure can be looked up 6799 with android.sensor.timestamp from the metadata included in the 6800 capture request. 6801 </hal_details> 6802 <tag id="BC" /> 6803 </entry> 6804 <entry name="temperature" type="float" 6805 optional="true"> 6806 <description>The temperature of the sensor, sampled at the time 6807 exposure began for this frame. 6808 6809 The thermal diode being queried should be inside the sensor PCB, or 6810 somewhere close to it. 6811 </description> 6812 6813 <units>Celsius</units> 6814 <range>Optional. This value is missing if no temperature is available.</range> 6815 <tag id="FUTURE" /> 6816 </entry> 6817 <entry name="neutralColorPoint" type="rational" visibility="public" 6818 optional="true" container="array"> 6819 <array> 6820 <size>3</size> 6821 </array> 6822 <description> 6823 The estimated camera neutral color in the native sensor colorspace at 6824 the time of capture. 6825 </description> 6826 <details> 6827 This value gives the neutral color point encoded as an RGB value in the 6828 native sensor color space. The neutral color point indicates the 6829 currently estimated white point of the scene illumination. It can be 6830 used to interpolate between the provided color transforms when 6831 processing raw sensor data. 6832 6833 The order of the values is R, G, B; where R is in the lowest index. 6834 </details> 6835 <tag id="RAW" /> 6836 </entry> 6837 <entry name="noiseProfile" type="double" visibility="public" 6838 optional="true" type_notes="Pairs of noise model coefficients" 6839 container="array" typedef="pairDoubleDouble"> 6840 <array> 6841 <size>2</size> 6842 <size>CFA Channels</size> 6843 </array> 6844 <description> 6845 Noise model coefficients for each CFA mosaic channel. 6846 </description> 6847 <details> 6848 This key contains two noise model coefficients for each CFA channel 6849 corresponding to the sensor amplification (S) and sensor readout 6850 noise (O). These are given as pairs of coefficients for each channel 6851 in the same order as channels listed for the CFA layout key 6852 (see android.sensor.info.colorFilterArrangement). This is 6853 represented as an array of Pair&lt;Double, Double&gt;, where 6854 the first member of the Pair at index n is the S coefficient and the 6855 second member is the O coefficient for the nth color channel in the CFA. 6856 6857 These coefficients are used in a two parameter noise model to describe 6858 the amount of noise present in the image for each CFA channel. The 6859 noise model used here is: 6860 6861 N(x) = sqrt(Sx + O) 6862 6863 Where x represents the recorded signal of a CFA channel normalized to 6864 the range [0, 1], and S and O are the noise model coeffiecients for 6865 that channel. 6866 6867 A more detailed description of the noise model can be found in the 6868 Adobe DNG specification for the NoiseProfile tag. 6869 </details> 6870 <hal_details> 6871 For a CFA layout of RGGB, the list of coefficients would be given as 6872 an array of doubles S0,O0,S1,O1,..., where S0 and O0 are the coefficients 6873 for the red channel, S1 and O1 are the coefficients for the first green 6874 channel, etc. 6875 </hal_details> 6876 <tag id="RAW" /> 6877 </entry> 6878 <entry name="profileHueSatMap" type="float" 6879 visibility="system" optional="true" 6880 type_notes="Mapping for hue, saturation, and value" 6881 container="array"> 6882 <array> 6883 <size>hue_samples</size> 6884 <size>saturation_samples</size> 6885 <size>value_samples</size> 6886 <size>3</size> 6887 </array> 6888 <description> 6889 A mapping containing a hue shift, saturation scale, and value scale 6890 for each pixel. 6891 </description> 6892 <units> 6893 The hue shift is given in degrees; saturation and value scale factors are 6894 unitless and are between 0 and 1 inclusive 6895 </units> 6896 <details> 6897 hue_samples, saturation_samples, and value_samples are given in 6898 android.sensor.profileHueSatMapDimensions. 6899 6900 Each entry of this map contains three floats corresponding to the 6901 hue shift, saturation scale, and value scale, respectively; where the 6902 hue shift has the lowest index. The map entries are stored in the key 6903 in nested loop order, with the value divisions in the outer loop, the 6904 hue divisions in the middle loop, and the saturation divisions in the 6905 inner loop. All zero input saturation entries are required to have a 6906 value scale factor of 1.0. 6907 </details> 6908 <tag id="RAW" /> 6909 </entry> 6910 <entry name="profileToneCurve" type="float" 6911 visibility="system" optional="true" 6912 type_notes="Samples defining a spline for a tone-mapping curve" 6913 container="array"> 6914 <array> 6915 <size>samples</size> 6916 <size>2</size> 6917 </array> 6918 <description> 6919 A list of x,y samples defining a tone-mapping curve for gamma adjustment. 6920 </description> 6921 <range> 6922 Each sample has an input range of `[0, 1]` and an output range of 6923 `[0, 1]`. The first sample is required to be `(0, 0)`, and the last 6924 sample is required to be `(1, 1)`. 6925 </range> 6926 <details> 6927 This key contains a default tone curve that can be applied while 6928 processing the image as a starting point for user adjustments. 6929 The curve is specified as a list of value pairs in linear gamma. 6930 The curve is interpolated using a cubic spline. 6931 </details> 6932 <tag id="RAW" /> 6933 </entry> 6934 <entry name="greenSplit" type="float" visibility="public" optional="true"> 6935 <description> 6936 The worst-case divergence between Bayer green channels. 6937 </description> 6938 <range> 6939 &gt;= 0 6940 </range> 6941 <details> 6942 This value is an estimate of the worst case split between the 6943 Bayer green channels in the red and blue rows in the sensor color 6944 filter array. 6945 6946 The green split is calculated as follows: 6947 6948 1. A 5x5 pixel (or larger) window W within the active sensor array is 6949 chosen. The term 'pixel' here is taken to mean a group of 4 Bayer 6950 mosaic channels (R, Gr, Gb, B). The location and size of the window 6951 chosen is implementation defined, and should be chosen to provide a 6952 green split estimate that is both representative of the entire image 6953 for this camera sensor, and can be calculated quickly. 6954 1. The arithmetic mean of the green channels from the red 6955 rows (mean_Gr) within W is computed. 6956 1. The arithmetic mean of the green channels from the blue 6957 rows (mean_Gb) within W is computed. 6958 1. The maximum ratio R of the two means is computed as follows: 6959 `R = max((mean_Gr + 1)/(mean_Gb + 1), (mean_Gb + 1)/(mean_Gr + 1))` 6960 6961 The ratio R is the green split divergence reported for this property, 6962 which represents how much the green channels differ in the mosaic 6963 pattern. This value is typically used to determine the treatment of 6964 the green mosaic channels when demosaicing. 6965 6966 The green split value can be roughly interpreted as follows: 6967 6968 * R &lt; 1.03 is a negligible split (&lt;3% divergence). 6969 * 1.20 &lt;= R &gt;= 1.03 will require some software 6970 correction to avoid demosaic errors (3-20% divergence). 6971 * R &gt; 1.20 will require strong software correction to produce 6972 a usuable image (&gt;20% divergence). 6973 </details> 6974 <hal_details> 6975 The green split given may be a static value based on prior 6976 characterization of the camera sensor using the green split 6977 calculation method given here over a large, representative, sample 6978 set of images. Other methods of calculation that produce equivalent 6979 results, and can be interpreted in the same manner, may be used. 6980 </hal_details> 6981 <tag id="RAW" /> 6982 </entry> 6983 </dynamic> 6984 <controls> 6985 <entry name="testPatternData" type="int32" visibility="public" optional="true" container="array"> 6986 <array> 6987 <size>4</size> 6988 </array> 6989 <description> 6990 A pixel `[R, G_even, G_odd, B]` that supplies the test pattern 6991 when android.sensor.testPatternMode is SOLID_COLOR. 6992 </description> 6993 <details> 6994 Each color channel is treated as an unsigned 32-bit integer. 6995 The camera device then uses the most significant X bits 6996 that correspond to how many bits are in its Bayer raw sensor 6997 output. 6998 6999 For example, a sensor with RAW10 Bayer output would use the 7000 10 most significant bits from each color channel. 7001 </details> 7002 <hal_details> 7003 </hal_details> 7004 </entry> 7005 <entry name="testPatternMode" type="int32" visibility="public" optional="true" 7006 enum="true"> 7007 <enum> 7008 <value>OFF 7009 <notes>No test pattern mode is used, and the camera 7010 device returns captures from the image sensor. 7011 7012 This is the default if the key is not set.</notes> 7013 </value> 7014 <value>SOLID_COLOR 7015 <notes> 7016 Each pixel in `[R, G_even, G_odd, B]` is replaced by its 7017 respective color channel provided in 7018 android.sensor.testPatternData. 7019 7020 For example: 7021 7022 android.testPatternData = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0] 7023 7024 All green pixels are 100% green. All red/blue pixels are black. 7025 7026 android.testPatternData = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0] 7027 7028 All red pixels are 100% red. Only the odd green pixels 7029 are 100% green. All blue pixels are 100% black. 7030 </notes> 7031 </value> 7032 <value>COLOR_BARS 7033 <notes> 7034 All pixel data is replaced with an 8-bar color pattern. 7035 7036 The vertical bars (left-to-right) are as follows: 7037 7038 * 100% white 7039 * yellow 7040 * cyan 7041 * green 7042 * magenta 7043 * red 7044 * blue 7045 * black 7046 7047 In general the image would look like the following: 7048 7049 W Y C G M R B K 7050 W Y C G M R B K 7051 W Y C G M R B K 7052 W Y C G M R B K 7053 W Y C G M R B K 7054 . . . . . . . . 7055 . . . . . . . . 7056 . . . . . . . . 7057 7058 (B = Blue, K = Black) 7059 7060 Each bar should take up 1/8 of the sensor pixel array width. 7061 When this is not possible, the bar size should be rounded 7062 down to the nearest integer and the pattern can repeat 7063 on the right side. 7064 7065 Each bar's height must always take up the full sensor 7066 pixel array height. 7067 7068 Each pixel in this test pattern must be set to either 7069 0% intensity or 100% intensity. 7070 </notes> 7071 </value> 7072 <value>COLOR_BARS_FADE_TO_GRAY 7073 <notes> 7074 The test pattern is similar to COLOR_BARS, except that 7075 each bar should start at its specified color at the top, 7076 and fade to gray at the bottom. 7077 7078 Furthermore each bar is further subdivided into a left and 7079 right half. The left half should have a smooth gradient, 7080 and the right half should have a quantized gradient. 7081 7082 In particular, the right half's should consist of blocks of the 7083 same color for 1/16th active sensor pixel array width. 7084 7085 The least significant bits in the quantized gradient should 7086 be copied from the most significant bits of the smooth gradient. 7087 7088 The height of each bar should always be a multiple of 128. 7089 When this is not the case, the pattern should repeat at the bottom 7090 of the image. 7091 </notes> 7092 </value> 7093 <value>PN9 7094 <notes> 7095 All pixel data is replaced by a pseudo-random sequence 7096 generated from a PN9 512-bit sequence (typically implemented 7097 in hardware with a linear feedback shift register). 7098 7099 The generator should be reset at the beginning of each frame, 7100 and thus each subsequent raw frame with this test pattern should 7101 be exactly the same as the last. 7102 </notes> 7103 </value> 7104 <value id="256">CUSTOM1 7105 <notes>The first custom test pattern. All custom patterns that are 7106 available only on this camera device are at least this numeric 7107 value. 7108 7109 All of the custom test patterns will be static 7110 (that is the raw image must not vary from frame to frame). 7111 </notes> 7112 </value> 7113 </enum> 7114 <description>When enabled, the sensor sends a test pattern instead of 7115 doing a real exposure from the camera. 7116 </description> 7117 <range>android.sensor.availableTestPatternModes</range> 7118 <details> 7119 When a test pattern is enabled, all manual sensor controls specified 7120 by android.sensor.* will be ignored. All other controls should 7121 work as normal. 7122 7123 For example, if manual flash is enabled, flash firing should still 7124 occur (and that the test pattern remain unmodified, since the flash 7125 would not actually affect it). 7126 7127 Defaults to OFF. 7128 </details> 7129 <hal_details> 7130 All test patterns are specified in the Bayer domain. 7131 7132 The HAL may choose to substitute test patterns from the sensor 7133 with test patterns from on-device memory. In that case, it should be 7134 indistinguishable to the ISP whether the data came from the 7135 sensor interconnect bus (such as CSI2) or memory. 7136 </hal_details> 7137 </entry> 7138 </controls> 7139 <dynamic> 7140 <clone entry="android.sensor.testPatternData" kind="controls"> 7141 </clone> 7142 <clone entry="android.sensor.testPatternMode" kind="controls"> 7143 </clone> 7144 </dynamic> 7145 <static> 7146 <entry name="availableTestPatternModes" type="int32" visibility="public" optional="true" 7147 type_notes="list of enums" container="array"> 7148 <array> 7149 <size>n</size> 7150 </array> 7151 <description>List of sensor test pattern modes for android.sensor.testPatternMode 7152 supported by this camera device. 7153 </description> 7154 <range>Any value listed in android.sensor.testPatternMode</range> 7155 <details> 7156 Defaults to OFF, and always includes OFF if defined. 7157 </details> 7158 <hal_details> 7159 All custom modes must be >= CUSTOM1. 7160 </hal_details> 7161 </entry> 7162 </static> 7163 <dynamic> 7164 <entry name="rollingShutterSkew" type="int64" visibility="public" hwlevel="limited"> 7165 <description>Duration between the start of first row exposure 7166 and the start of last row exposure.</description> 7167 <units>Nanoseconds</units> 7168 <range> &gt;= 0 and &lt; 7169 {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration}.</range> 7170 <details> 7171 This is the exposure time skew between the first and last 7172 row exposure start times. The first row and the last row are 7173 the first and last rows inside of the 7174 android.sensor.info.activeArraySize. 7175 7176 For typical camera sensors that use rolling shutters, this is also equivalent 7177 to the frame readout time. 7178 </details> 7179 <hal_details> 7180 The HAL must report `0` if the sensor is using global shutter, where all pixels begin 7181 exposure at the same time. 7182 </hal_details> 7183 <tag id="V1" /> 7184 </entry> 7185 </dynamic> 7186 <static> 7187 <entry name="opticalBlackRegions" type="int32" visibility="public" optional="true" 7188 container="array" typedef="rectangle"> 7189 <array> 7190 <size>4</size> 7191 <size>num_regions</size> 7192 </array> 7193 <description>List of disjoint rectangles indicating the sensor 7194 optically shielded black pixel regions. 7195 </description> 7196 <details> 7197 In most camera sensors, the active array is surrounded by some 7198 optically shielded pixel areas. By blocking light, these pixels 7199 provides a reliable black reference for black level compensation 7200 in active array region. 7201 7202 The data representation is int[4], which maps to (left, top, width, height). 7203 7204 This key provides a list of disjoint rectangles specifying the 7205 regions of optically shielded (with metal shield) black pixel 7206 regions if the camera device is capable of reading out these black 7207 pixels in the output raw images. In comparison to the fixed black 7208 level values reported by android.sensor.blackLevelPattern, this key 7209 may provide a more accurate way for the application to calculate 7210 black level of each captured raw images. 7211 7212 When this key is reported, the android.sensor.dynamicBlackLevel and 7213 android.sensor.dynamicWhiteLevel will also be reported. 7214 </details> 7215 <hal_details> 7216 This array contains (xmin, ymin, width, height). The (xmin, ymin) 7217 must be &gt;= (0,0) and &lt;= 7218 android.sensor.info.pixelArraySize. The (width, height) must be 7219 &lt;= android.sensor.info.pixelArraySize. Each region must be 7220 outside the region reported by 7221 android.sensor.info.preCorrectionActiveArraySize. 7222 7223 The HAL must report minimal number of disjoint regions for the 7224 optically shielded back pixel regions. For example, if a region can 7225 be covered by one rectangle, the HAL must not split this region into 7226 multiple rectangles. 7227 </hal_details> 7228 </entry> 7229 </static> 7230 <dynamic> 7231 <entry name="dynamicBlackLevel" type="float" visibility="public" 7232 optional="true" type_notes="2x2 raw count block" container="array"> 7233 <array> 7234 <size>4</size> 7235 </array> 7236 <description> 7237 A per-frame dynamic black level offset for each of the color filter 7238 arrangement (CFA) mosaic channels. 7239 </description> 7240 <range>&gt;= 0 for each.</range> 7241 <details> 7242 Camera sensor black levels may vary dramatically for different 7243 capture settings (e.g. android.sensor.sensitivity). The fixed black 7244 level reported by android.sensor.blackLevelPattern may be too 7245 inaccurate to represent the actual value on a per-frame basis. The 7246 camera device internal pipeline relies on reliable black level values 7247 to process the raw images appropriately. To get the best image 7248 quality, the camera device may choose to estimate the per frame black 7249 level values either based on optically shielded black regions 7250 (android.sensor.opticalBlackRegions) or its internal model. 7251 7252 This key reports the camera device estimated per-frame zero light 7253 value for each of the CFA mosaic channels in the camera sensor. The 7254 android.sensor.blackLevelPattern may only represent a coarse 7255 approximation of the actual black level values. This value is the 7256 black level used in camera device internal image processing pipeline 7257 and generally more accurate than the fixed black level values. 7258 However, since they are estimated values by the camera device, they 7259 may not be as accurate as the black level values calculated from the 7260 optical black pixels reported by android.sensor.opticalBlackRegions. 7261 7262 The values are given in the same order as channels listed for the CFA 7263 layout key (see android.sensor.info.colorFilterArrangement), i.e. the 7264 nth value given corresponds to the black level offset for the nth 7265 color channel listed in the CFA. 7266 7267 This key will be available if android.sensor.opticalBlackRegions is 7268 available or the camera device advertises this key via 7269 {@link ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS}. 7270 </details> 7271 <hal_details> 7272 The values are given in row-column scan order, with the first value 7273 corresponding to the element of the CFA in row=0, column=0. 7274 </hal_details> 7275 <tag id="RAW" /> 7276 </entry> 7277 <entry name="dynamicWhiteLevel" type="int32" visibility="public" 7278 optional="true" > 7279 <description> 7280 Maximum raw value output by sensor for this frame. 7281 </description> 7282 <range> &gt;= 0</range> 7283 <details> 7284 Since the android.sensor.blackLevelPattern may change for different 7285 capture settings (e.g., android.sensor.sensitivity), the white 7286 level will change accordingly. This key is similar to 7287 android.sensor.info.whiteLevel, but specifies the camera device 7288 estimated white level for each frame. 7289 7290 This key will be available if android.sensor.opticalBlackRegions is 7291 available or the camera device advertises this key via 7292 {@link ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS}. 7293 </details> 7294 <hal_details> 7295 The full bit depth of the sensor must be available in the raw data, 7296 so the value for linear sensors should not be significantly lower 7297 than maximum raw value supported, i.e. 2^(sensor bits per pixel). 7298 </hal_details> 7299 <tag id="RAW" /> 7300 </entry> 7301 </dynamic> 7302 <static> 7303 <entry name="opaqueRawSize" type="int32" visibility="system" container="array"> 7304 <array> 7305 <size>n</size> 7306 <size>3</size> 7307 </array> 7308 <description>Size in bytes for all the listed opaque RAW buffer sizes</description> 7309 <range>Must be large enough to fit the opaque RAW of corresponding size produced by 7310 the camera</range> 7311 <details> 7312 This configurations are listed as `(width, height, size_in_bytes)` tuples. 7313 This is used for sizing the gralloc buffers for opaque RAW buffers. 7314 All RAW_OPAQUE output stream configuration listed in 7315 android.scaler.availableStreamConfigurations will have a corresponding tuple in 7316 this key. 7317 </details> 7318 <hal_details> 7319 This key is added in HAL3.4. 7320 For HAL3.4 or above: devices advertising RAW_OPAQUE format output must list this key. 7321 For HAL3.3 or earlier devices: if RAW_OPAQUE ouput is advertised, camera framework 7322 will derive this key by assuming each pixel takes two bytes and no padding bytes 7323 between rows. 7324 </hal_details> 7325 </entry> 7326 </static> 7327 </section> 7328 <section name="shading"> 7329 <controls> 7330 <entry name="mode" type="byte" visibility="public" enum="true" hwlevel="full"> 7331 <enum> 7332 <value>OFF 7333 <notes>No lens shading correction is applied.</notes></value> 7334 <value>FAST 7335 <notes>Apply lens shading corrections, without slowing 7336 frame rate relative to sensor raw output</notes></value> 7337 <value>HIGH_QUALITY 7338 <notes>Apply high-quality lens shading correction, at the 7339 cost of possibly reduced frame rate.</notes></value> 7340 </enum> 7341 <description>Quality of lens shading correction applied 7342 to the image data.</description> 7343 <range>android.shading.availableModes</range> 7344 <details> 7345 When set to OFF mode, no lens shading correction will be applied by the 7346 camera device, and an identity lens shading map data will be provided 7347 if `android.statistics.lensShadingMapMode == ON`. For example, for lens 7348 shading map with size of `[ 4, 3 ]`, 7349 the output android.statistics.lensShadingCorrectionMap for this case will be an identity 7350 map shown below: 7351 7352 [ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 7353 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 7354 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 7355 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 7356 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 7357 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 ] 7358 7359 When set to other modes, lens shading correction will be applied by the camera 7360 device. Applications can request lens shading map data by setting 7361 android.statistics.lensShadingMapMode to ON, and then the camera device will provide lens 7362 shading map data in android.statistics.lensShadingCorrectionMap; the returned shading map 7363 data will be the one applied by the camera device for this capture request. 7364 7365 The shading map data may depend on the auto-exposure (AE) and AWB statistics, therefore 7366 the reliability of the map data may be affected by the AE and AWB algorithms. When AE and 7367 AWB are in AUTO modes(android.control.aeMode `!=` OFF and android.control.awbMode `!=` 7368 OFF), to get best results, it is recommended that the applications wait for the AE and AWB 7369 to be converged before using the returned shading map data. 7370 </details> 7371 </entry> 7372 <entry name="strength" type="byte"> 7373 <description>Control the amount of shading correction 7374 applied to the images</description> 7375 <units>unitless: 1-10; 10 is full shading 7376 compensation</units> 7377 <tag id="FUTURE" /> 7378 </entry> 7379 </controls> 7380 <dynamic> 7381 <clone entry="android.shading.mode" kind="controls"> 7382 </clone> 7383 </dynamic> 7384 <static> 7385 <entry name="availableModes" type="byte" visibility="public" 7386 type_notes="List of enums (android.shading.mode)." container="array" 7387 typedef="enumList" hwlevel="legacy"> 7388 <array> 7389 <size>n</size> 7390 </array> 7391 <description> 7392 List of lens shading modes for android.shading.mode that are supported by this camera device. 7393 </description> 7394 <range>Any value listed in android.shading.mode</range> 7395 <details> 7396 This list contains lens shading modes that can be set for the camera device. 7397 Camera devices that support the MANUAL_POST_PROCESSING capability will always 7398 list OFF and FAST mode. This includes all FULL level devices. 7399 LEGACY devices will always only support FAST mode. 7400 </details> 7401 <hal_details> 7402 HAL must support both FAST and HIGH_QUALITY if lens shading correction control is 7403 available on the camera device, but the underlying implementation can be the same for 7404 both modes. That is, if the highest quality implementation on the camera device does not 7405 slow down capture rate, then FAST and HIGH_QUALITY will generate the same output. 7406 </hal_details> 7407 </entry> 7408 </static> 7409 </section> 7410 <section name="statistics"> 7411 <controls> 7412 <entry name="faceDetectMode" type="byte" visibility="public" enum="true" 7413 hwlevel="legacy"> 7414 <enum> 7415 <value>OFF 7416 <notes>Do not include face detection statistics in capture 7417 results.</notes></value> 7418 <value optional="true">SIMPLE 7419 <notes>Return face rectangle and confidence values only. 7420 </notes></value> 7421 <value optional="true">FULL 7422 <notes>Return all face 7423 metadata. 7424 7425 In this mode, face rectangles, scores, landmarks, and face IDs are all valid. 7426 </notes></value> 7427 </enum> 7428 <description>Operating mode for the face detector 7429 unit.</description> 7430 <range>android.statistics.info.availableFaceDetectModes</range> 7431 <details>Whether face detection is enabled, and whether it 7432 should output just the basic fields or the full set of 7433 fields.</details> 7434 <hal_details> 7435 SIMPLE mode must fill in android.statistics.faceRectangles and 7436 android.statistics.faceScores. 7437 FULL mode must also fill in android.statistics.faceIds, and 7438 android.statistics.faceLandmarks. 7439 </hal_details> 7440 <tag id="BC" /> 7441 </entry> 7442 <entry name="histogramMode" type="byte" enum="true" typedef="boolean"> 7443 <enum> 7444 <value>OFF</value> 7445 <value>ON</value> 7446 </enum> 7447 <description>Operating mode for histogram 7448 generation</description> 7449 <tag id="FUTURE" /> 7450 </entry> 7451 <entry name="sharpnessMapMode" type="byte" enum="true" typedef="boolean"> 7452 <enum> 7453 <value>OFF</value> 7454 <value>ON</value> 7455 </enum> 7456 <description>Operating mode for sharpness map 7457 generation</description> 7458 <tag id="FUTURE" /> 7459 </entry> 7460 <entry name="hotPixelMapMode" type="byte" visibility="public" enum="true" 7461 typedef="boolean"> 7462 <enum> 7463 <value>OFF 7464 <notes>Hot pixel map production is disabled. 7465 </notes></value> 7466 <value>ON 7467 <notes>Hot pixel map production is enabled. 7468 </notes></value> 7469 </enum> 7470 <description> 7471 Operating mode for hot pixel map generation. 7472 </description> 7473 <range>android.statistics.info.availableHotPixelMapModes</range> 7474 <details> 7475 If set to `true`, a hot pixel map is returned in android.statistics.hotPixelMap. 7476 If set to `false`, no hot pixel map will be returned. 7477 </details> 7478 <tag id="V1" /> 7479 <tag id="RAW" /> 7480 </entry> 7481 </controls> 7482 <static> 7483 <namespace name="info"> 7484 <entry name="availableFaceDetectModes" type="byte" 7485 visibility="public" 7486 type_notes="List of enums from android.statistics.faceDetectMode" 7487 container="array" 7488 typedef="enumList" 7489 hwlevel="legacy"> 7490 <array> 7491 <size>n</size> 7492 </array> 7493 <description>List of face detection modes for android.statistics.faceDetectMode that are 7494 supported by this camera device. 7495 </description> 7496 <range>Any value listed in android.statistics.faceDetectMode</range> 7497 <details>OFF is always supported. 7498 </details> 7499 </entry> 7500 <entry name="histogramBucketCount" type="int32"> 7501 <description>Number of histogram buckets 7502 supported</description> 7503 <range>&gt;= 64</range> 7504 <tag id="FUTURE" /> 7505 </entry> 7506 <entry name="maxFaceCount" type="int32" visibility="public" hwlevel="legacy"> 7507 <description>The maximum number of simultaneously detectable 7508 faces.</description> 7509 <range>0 for cameras without available face detection; otherwise: 7510 `>=4` for LIMITED or FULL hwlevel devices or 7511 `>0` for LEGACY devices.</range> 7512 <tag id="BC" /> 7513 </entry> 7514 <entry name="maxHistogramCount" type="int32"> 7515 <description>Maximum value possible for a histogram 7516 bucket</description> 7517 <tag id="FUTURE" /> 7518 </entry> 7519 <entry name="maxSharpnessMapValue" type="int32"> 7520 <description>Maximum value possible for a sharpness map 7521 region.</description> 7522 <tag id="FUTURE" /> 7523 </entry> 7524 <entry name="sharpnessMapSize" type="int32" 7525 type_notes="width x height" container="array" typedef="size"> 7526 <array> 7527 <size>2</size> 7528 </array> 7529 <description>Dimensions of the sharpness 7530 map</description> 7531 <range>Must be at least 32 x 32</range> 7532 <tag id="FUTURE" /> 7533 </entry> 7534 <entry name="availableHotPixelMapModes" type="byte" visibility="public" 7535 type_notes="list of enums" container="array" typedef="boolean"> 7536 <array> 7537 <size>n</size> 7538 </array> 7539 <description> 7540 List of hot pixel map output modes for android.statistics.hotPixelMapMode that are 7541 supported by this camera device. 7542 </description> 7543 <range>Any value listed in android.statistics.hotPixelMapMode</range> 7544 <details> 7545 If no hotpixel map output is available for this camera device, this will contain only 7546 `false`. 7547 7548 ON is always supported on devices with the RAW capability. 7549 </details> 7550 <tag id="V1" /> 7551 <tag id="RAW" /> 7552 </entry> 7553 <entry name="availableLensShadingMapModes" type="byte" visibility="public" 7554 type_notes="list of enums" container="array" typedef="enumList"> 7555 <array> 7556 <size>n</size> 7557 </array> 7558 <description> 7559 List of lens shading map output modes for android.statistics.lensShadingMapMode that 7560 are supported by this camera device. 7561 </description> 7562 <range>Any value listed in android.statistics.lensShadingMapMode</range> 7563 <details> 7564 If no lens shading map output is available for this camera device, this key will 7565 contain only OFF. 7566 7567 ON is always supported on devices with the RAW capability. 7568 LEGACY mode devices will always only support OFF. 7569 </details> 7570 </entry> 7571 </namespace> 7572 </static> 7573 <dynamic> 7574 <clone entry="android.statistics.faceDetectMode" 7575 kind="controls"></clone> 7576 <entry name="faceIds" type="int32" visibility="ndk_public" 7577 container="array" hwlevel="legacy"> 7578 <array> 7579 <size>n</size> 7580 </array> 7581 <description>List of unique IDs for detected faces.</description> 7582 <details> 7583 Each detected face is given a unique ID that is valid for as long as the face is visible 7584 to the camera device. A face that leaves the field of view and later returns may be 7585 assigned a new ID. 7586 7587 Only available if android.statistics.faceDetectMode == FULL</details> 7588 <tag id="BC" /> 7589 </entry> 7590 <entry name="faceLandmarks" type="int32" visibility="ndk_public" 7591 type_notes="(leftEyeX, leftEyeY, rightEyeX, rightEyeY, mouthX, mouthY)" 7592 container="array" hwlevel="legacy"> 7593 <array> 7594 <size>n</size> 7595 <size>6</size> 7596 </array> 7597 <description>List of landmarks for detected 7598 faces.</description> 7599 <details> 7600 The coordinate system is that of android.sensor.info.activeArraySize, with 7601 `(0, 0)` being the top-left pixel of the active array. 7602 7603 Only available if android.statistics.faceDetectMode == FULL</details> 7604 <tag id="BC" /> 7605 </entry> 7606 <entry name="faceRectangles" type="int32" visibility="ndk_public" 7607 type_notes="(xmin, ymin, xmax, ymax). (0,0) is top-left of active pixel area" 7608 container="array" typedef="rectangle" hwlevel="legacy"> 7609 <array> 7610 <size>n</size> 7611 <size>4</size> 7612 </array> 7613 <description>List of the bounding rectangles for detected 7614 faces.</description> 7615 <details> 7616 The data representation is int[4], which maps to (left, top, width, height). 7617 7618 The coordinate system is that of android.sensor.info.activeArraySize, with 7619 `(0, 0)` being the top-left pixel of the active array. 7620 7621 Only available if android.statistics.faceDetectMode != OFF</details> 7622 <tag id="BC" /> 7623 </entry> 7624 <entry name="faceScores" type="byte" visibility="ndk_public" 7625 container="array" hwlevel="legacy"> 7626 <array> 7627 <size>n</size> 7628 </array> 7629 <description>List of the face confidence scores for 7630 detected faces</description> 7631 <range>1-100</range> 7632 <details>Only available if android.statistics.faceDetectMode != OFF. 7633 </details> 7634 <hal_details> 7635 The value should be meaningful (for example, setting 100 at 7636 all times is illegal).</hal_details> 7637 <tag id="BC" /> 7638 </entry> 7639 <entry name="faces" type="int32" visibility="java_public" synthetic="true" 7640 container="array" typedef="face" hwlevel="legacy"> 7641 <array> 7642 <size>n</size> 7643 </array> 7644 <description>List of the faces detected through camera face detection 7645 in this capture.</description> 7646 <details> 7647 Only available if android.statistics.faceDetectMode `!=` OFF. 7648 </details> 7649 </entry> 7650 <entry name="histogram" type="int32" 7651 type_notes="count of pixels for each color channel that fall into each histogram bucket, scaled to be between 0 and maxHistogramCount" 7652 container="array"> 7653 <array> 7654 <size>n</size> 7655 <size>3</size> 7656 </array> 7657 <description>A 3-channel histogram based on the raw 7658 sensor data</description> 7659 <details>The k'th bucket (0-based) covers the input range 7660 (with w = android.sensor.info.whiteLevel) of [ k * w/N, 7661 (k + 1) * w / N ). If only a monochrome sharpness map is 7662 supported, all channels should have the same data</details> 7663 <tag id="FUTURE" /> 7664 </entry> 7665 <clone entry="android.statistics.histogramMode" 7666 kind="controls"></clone> 7667 <entry name="sharpnessMap" type="int32" 7668 type_notes="estimated sharpness for each region of the input image. Normalized to be between 0 and maxSharpnessMapValue. Higher values mean sharper (better focused)" 7669 container="array"> 7670 <array> 7671 <size>n</size> 7672 <size>m</size> 7673 <size>3</size> 7674 </array> 7675 <description>A 3-channel sharpness map, based on the raw 7676 sensor data</description> 7677 <details>If only a monochrome sharpness map is supported, 7678 all channels should have the same data</details> 7679 <tag id="FUTURE" /> 7680 </entry> 7681 <clone entry="android.statistics.sharpnessMapMode" 7682 kind="controls"></clone> 7683 <entry name="lensShadingCorrectionMap" type="byte" visibility="java_public" 7684 typedef="lensShadingMap" hwlevel="full"> 7685 <description>The shading map is a low-resolution floating-point map 7686 that lists the coefficients used to correct for vignetting, for each 7687 Bayer color channel.</description> 7688 <range>Each gain factor is &gt;= 1</range> 7689 <details> 7690 The map provided here is the same map that is used by the camera device to 7691 correct both color shading and vignetting for output non-RAW images. 7692 7693 When there is no lens shading correction applied to RAW 7694 output images (android.sensor.info.lensShadingApplied `==` 7695 false), this map is the complete lens shading correction 7696 map; when there is some lens shading correction applied to 7697 the RAW output image (android.sensor.info.lensShadingApplied 7698 `==` true), this map reports the remaining lens shading 7699 correction map that needs to be applied to get shading 7700 corrected images that match the camera device's output for 7701 non-RAW formats. 7702 7703 For a complete shading correction map, the least shaded 7704 section of the image will have a gain factor of 1; all 7705 other sections will have gains above 1. 7706 7707 When android.colorCorrection.mode = TRANSFORM_MATRIX, the map 7708 will take into account the colorCorrection settings. 7709 7710 The shading map is for the entire active pixel array, and is not 7711 affected by the crop region specified in the request. Each shading map 7712 entry is the value of the shading compensation map over a specific 7713 pixel on the sensor. Specifically, with a (N x M) resolution shading 7714 map, and an active pixel array size (W x H), shading map entry 7715 (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at 7716 pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels. 7717 The map is assumed to be bilinearly interpolated between the sample points. 7718 7719 The channel order is [R, Geven, Godd, B], where Geven is the green 7720 channel for the even rows of a Bayer pattern, and Godd is the odd rows. 7721 The shading map is stored in a fully interleaved format. 7722 7723 The shading map will generally have on the order of 30-40 rows and columns, 7724 and will be smaller than 64x64. 7725 7726 As an example, given a very small map defined as: 7727 7728 width,height = [ 4, 3 ] 7729 values = 7730 [ 1.3, 1.2, 1.15, 1.2, 1.2, 1.2, 1.15, 1.2, 7731 1.1, 1.2, 1.2, 1.2, 1.3, 1.2, 1.3, 1.3, 7732 1.2, 1.2, 1.25, 1.1, 1.1, 1.1, 1.1, 1.0, 7733 1.0, 1.0, 1.0, 1.0, 1.2, 1.3, 1.25, 1.2, 7734 1.3, 1.2, 1.2, 1.3, 1.2, 1.15, 1.1, 1.2, 7735 1.2, 1.1, 1.0, 1.2, 1.3, 1.15, 1.2, 1.3 ] 7736 7737 The low-resolution scaling map images for each channel are 7738 (displayed using nearest-neighbor interpolation): 7739 7740  7741  7742  7743  7744 7745 As a visualization only, inverting the full-color map to recover an 7746 image of a gray wall (using bicubic interpolation for visual quality) as captured by the sensor gives: 7747 7748  7749 </details> 7750 </entry> 7751 <entry name="lensShadingMap" type="float" visibility="ndk_public" 7752 type_notes="2D array of float gain factors per channel to correct lens shading" 7753 container="array" hwlevel="full"> 7754 <array> 7755 <size>4</size> 7756 <size>n</size> 7757 <size>m</size> 7758 </array> 7759 <description>The shading map is a low-resolution floating-point map 7760 that lists the coefficients used to correct for vignetting and color shading, 7761 for each Bayer color channel of RAW image data.</description> 7762 <range>Each gain factor is &gt;= 1</range> 7763 <details> 7764 The map provided here is the same map that is used by the camera device to 7765 correct both color shading and vignetting for output non-RAW images. 7766 7767 When there is no lens shading correction applied to RAW 7768 output images (android.sensor.info.lensShadingApplied `==` 7769 false), this map is the complete lens shading correction 7770 map; when there is some lens shading correction applied to 7771 the RAW output image (android.sensor.info.lensShadingApplied 7772 `==` true), this map reports the remaining lens shading 7773 correction map that needs to be applied to get shading 7774 corrected images that match the camera device's output for 7775 non-RAW formats. 7776 7777 For a complete shading correction map, the least shaded 7778 section of the image will have a gain factor of 1; all 7779 other sections will have gains above 1. 7780 7781 When android.colorCorrection.mode = TRANSFORM_MATRIX, the map 7782 will take into account the colorCorrection settings. 7783 7784 The shading map is for the entire active pixel array, and is not 7785 affected by the crop region specified in the request. Each shading map 7786 entry is the value of the shading compensation map over a specific 7787 pixel on the sensor. Specifically, with a (N x M) resolution shading 7788 map, and an active pixel array size (W x H), shading map entry 7789 (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at 7790 pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels. 7791 The map is assumed to be bilinearly interpolated between the sample points. 7792 7793 The channel order is [R, Geven, Godd, B], where Geven is the green 7794 channel for the even rows of a Bayer pattern, and Godd is the odd rows. 7795 The shading map is stored in a fully interleaved format, and its size 7796 is provided in the camera static metadata by android.lens.info.shadingMapSize. 7797 7798 The shading map will generally have on the order of 30-40 rows and columns, 7799 and will be smaller than 64x64. 7800 7801 As an example, given a very small map defined as: 7802 7803 android.lens.info.shadingMapSize = [ 4, 3 ] 7804 android.statistics.lensShadingMap = 7805 [ 1.3, 1.2, 1.15, 1.2, 1.2, 1.2, 1.15, 1.2, 7806 1.1, 1.2, 1.2, 1.2, 1.3, 1.2, 1.3, 1.3, 7807 1.2, 1.2, 1.25, 1.1, 1.1, 1.1, 1.1, 1.0, 7808 1.0, 1.0, 1.0, 1.0, 1.2, 1.3, 1.25, 1.2, 7809 1.3, 1.2, 1.2, 1.3, 1.2, 1.15, 1.1, 1.2, 7810 1.2, 1.1, 1.0, 1.2, 1.3, 1.15, 1.2, 1.3 ] 7811 7812 The low-resolution scaling map images for each channel are 7813 (displayed using nearest-neighbor interpolation): 7814 7815  7816  7817  7818  7819 7820 As a visualization only, inverting the full-color map to recover an 7821 image of a gray wall (using bicubic interpolation for visual quality) 7822 as captured by the sensor gives: 7823 7824  7825 7826 Note that the RAW image data might be subject to lens shading 7827 correction not reported on this map. Query 7828 android.sensor.info.lensShadingApplied to see if RAW image data has subject 7829 to lens shading correction. If android.sensor.info.lensShadingApplied 7830 is TRUE, the RAW image data is subject to partial or full lens shading 7831 correction. In the case full lens shading correction is applied to RAW 7832 images, the gain factor map reported in this key will contain all 1.0 gains. 7833 In other words, the map reported in this key is the remaining lens shading 7834 that needs to be applied on the RAW image to get images without lens shading 7835 artifacts. See android.request.maxNumOutputRaw for a list of RAW image 7836 formats. 7837 </details> 7838 <hal_details> 7839 The lens shading map calculation may depend on exposure and white balance statistics. 7840 When AE and AWB are in AUTO modes 7841 (android.control.aeMode `!=` OFF and android.control.awbMode `!=` OFF), the HAL 7842 may have all the information it need to generate most accurate lens shading map. When 7843 AE or AWB are in manual mode 7844 (android.control.aeMode `==` OFF or android.control.awbMode `==` OFF), the shading map 7845 may be adversely impacted by manual exposure or white balance parameters. To avoid 7846 generating unreliable shading map data, the HAL may choose to lock the shading map with 7847 the latest known good map generated when the AE and AWB are in AUTO modes. 7848 </hal_details> 7849 </entry> 7850 <entry name="predictedColorGains" type="float" 7851 visibility="hidden" 7852 deprecated="true" 7853 optional="true" 7854 type_notes="A 1D array of floats for 4 color channel gains" 7855 container="array"> 7856 <array> 7857 <size>4</size> 7858 </array> 7859 <description>The best-fit color channel gains calculated 7860 by the camera device's statistics units for the current output frame. 7861 </description> 7862 <details> 7863 This may be different than the gains used for this frame, 7864 since statistics processing on data from a new frame 7865 typically completes after the transform has already been 7866 applied to that frame. 7867 7868 The 4 channel gains are defined in Bayer domain, 7869 see android.colorCorrection.gains for details. 7870 7871 This value should always be calculated by the auto-white balance (AWB) block, 7872 regardless of the android.control.* current values. 7873 </details> 7874 </entry> 7875 <entry name="predictedColorTransform" type="rational" 7876 visibility="hidden" 7877 deprecated="true" 7878 optional="true" 7879 type_notes="3x3 rational matrix in row-major order" 7880 container="array"> 7881 <array> 7882 <size>3</size> 7883 <size>3</size> 7884 </array> 7885 <description>The best-fit color transform matrix estimate 7886 calculated by the camera device's statistics units for the current 7887 output frame.</description> 7888 <details>The camera device will provide the estimate from its 7889 statistics unit on the white balance transforms to use 7890 for the next frame. These are the values the camera device believes 7891 are the best fit for the current output frame. This may 7892 be different than the transform used for this frame, since 7893 statistics processing on data from a new frame typically 7894 completes after the transform has already been applied to 7895 that frame. 7896 7897 These estimates must be provided for all frames, even if 7898 capture settings and color transforms are set by the application. 7899 7900 This value should always be calculated by the auto-white balance (AWB) block, 7901 regardless of the android.control.* current values. 7902 </details> 7903 </entry> 7904 <entry name="sceneFlicker" type="byte" visibility="public" enum="true" 7905 hwlevel="full"> 7906 <enum> 7907 <value>NONE 7908 <notes>The camera device does not detect any flickering illumination 7909 in the current scene.</notes></value> 7910 <value>50HZ 7911 <notes>The camera device detects illumination flickering at 50Hz 7912 in the current scene.</notes></value> 7913 <value>60HZ 7914 <notes>The camera device detects illumination flickering at 60Hz 7915 in the current scene.</notes></value> 7916 </enum> 7917 <description>The camera device estimated scene illumination lighting 7918 frequency.</description> 7919 <details> 7920 Many light sources, such as most fluorescent lights, flicker at a rate 7921 that depends on the local utility power standards. This flicker must be 7922 accounted for by auto-exposure routines to avoid artifacts in captured images. 7923 The camera device uses this entry to tell the application what the scene 7924 illuminant frequency is. 7925 7926 When manual exposure control is enabled 7927 (`android.control.aeMode == OFF` or `android.control.mode == 7928 OFF`), the android.control.aeAntibandingMode doesn't perform 7929 antibanding, and the application can ensure it selects 7930 exposure times that do not cause banding issues by looking 7931 into this metadata field. See 7932 android.control.aeAntibandingMode for more details. 7933 7934 Reports NONE if there doesn't appear to be flickering illumination. 7935 </details> 7936 </entry> 7937 <clone entry="android.statistics.hotPixelMapMode" kind="controls"> 7938 </clone> 7939 <entry name="hotPixelMap" type="int32" visibility="public" 7940 type_notes="list of coordinates based on android.sensor.pixelArraySize" 7941 container="array" typedef="point"> 7942 <array> 7943 <size>2</size> 7944 <size>n</size> 7945 </array> 7946 <description> 7947 List of `(x, y)` coordinates of hot/defective pixels on the sensor. 7948 </description> 7949 <range> 7950 n <= number of pixels on the sensor. 7951 The `(x, y)` coordinates must be bounded by 7952 android.sensor.info.pixelArraySize. 7953 </range> 7954 <details> 7955 A coordinate `(x, y)` must lie between `(0, 0)`, and 7956 `(width - 1, height - 1)` (inclusive), which are the top-left and 7957 bottom-right of the pixel array, respectively. The width and 7958 height dimensions are given in android.sensor.info.pixelArraySize. 7959 This may include hot pixels that lie outside of the active array 7960 bounds given by android.sensor.info.activeArraySize. 7961 </details> 7962 <hal_details> 7963 A hotpixel map contains the coordinates of pixels on the camera 7964 sensor that do report valid values (usually due to defects in 7965 the camera sensor). This includes pixels that are stuck at certain 7966 values, or have a response that does not accuractly encode the 7967 incoming light from the scene. 7968 7969 To avoid performance issues, there should be significantly fewer hot 7970 pixels than actual pixels on the camera sensor. 7971 </hal_details> 7972 <tag id="V1" /> 7973 <tag id="RAW" /> 7974 </entry> 7975 </dynamic> 7976 <controls> 7977 <entry name="lensShadingMapMode" type="byte" visibility="public" enum="true" hwlevel="full"> 7978 <enum> 7979 <value>OFF 7980 <notes>Do not include a lens shading map in the capture result.</notes></value> 7981 <value>ON 7982 <notes>Include a lens shading map in the capture result.</notes></value> 7983 </enum> 7984 <description>Whether the camera device will output the lens 7985 shading map in output result metadata.</description> 7986 <range>android.statistics.info.availableLensShadingMapModes</range> 7987 <details>When set to ON, 7988 android.statistics.lensShadingMap will be provided in 7989 the output result metadata. 7990 7991 ON is always supported on devices with the RAW capability. 7992 </details> 7993 <tag id="RAW" /> 7994 </entry> 7995 </controls> 7996 <dynamic> 7997 <clone entry="android.statistics.lensShadingMapMode" kind="controls"> 7998 </clone> 7999 </dynamic> 8000 </section> 8001 <section name="tonemap"> 8002 <controls> 8003 <entry name="curveBlue" type="float" visibility="ndk_public" 8004 type_notes="1D array of float pairs (P_IN, P_OUT). The maximum number of pairs is specified by android.tonemap.maxCurvePoints." 8005 container="array" hwlevel="full"> 8006 <array> 8007 <size>n</size> 8008 <size>2</size> 8009 </array> 8010 <description>Tonemapping / contrast / gamma curve for the blue 8011 channel, to use when android.tonemap.mode is 8012 CONTRAST_CURVE.</description> 8013 <details>See android.tonemap.curveRed for more details.</details> 8014 </entry> 8015 <entry name="curveGreen" type="float" visibility="ndk_public" 8016 type_notes="1D array of float pairs (P_IN, P_OUT). The maximum number of pairs is specified by android.tonemap.maxCurvePoints." 8017 container="array" hwlevel="full"> 8018 <array> 8019 <size>n</size> 8020 <size>2</size> 8021 </array> 8022 <description>Tonemapping / contrast / gamma curve for the green 8023 channel, to use when android.tonemap.mode is 8024 CONTRAST_CURVE.</description> 8025 <details>See android.tonemap.curveRed for more details.</details> 8026 </entry> 8027 <entry name="curveRed" type="float" visibility="ndk_public" 8028 type_notes="1D array of float pairs (P_IN, P_OUT). The maximum number of pairs is specified by android.tonemap.maxCurvePoints." 8029 container="array" hwlevel="full"> 8030 <array> 8031 <size>n</size> 8032 <size>2</size> 8033 </array> 8034 <description>Tonemapping / contrast / gamma curve for the red 8035 channel, to use when android.tonemap.mode is 8036 CONTRAST_CURVE.</description> 8037 <range>0-1 on both input and output coordinates, normalized 8038 as a floating-point value such that 0 == black and 1 == white. 8039 </range> 8040 <details> 8041 Each channel's curve is defined by an array of control points: 8042 8043 android.tonemap.curveRed = 8044 [ P0in, P0out, P1in, P1out, P2in, P2out, P3in, P3out, ..., PNin, PNout ] 8045 2 <= N <= android.tonemap.maxCurvePoints 8046 8047 These are sorted in order of increasing `Pin`; it is 8048 required that input values 0.0 and 1.0 are included in the list to 8049 define a complete mapping. For input values between control points, 8050 the camera device must linearly interpolate between the control 8051 points. 8052 8053 Each curve can have an independent number of points, and the number 8054 of points can be less than max (that is, the request doesn't have to 8055 always provide a curve with number of points equivalent to 8056 android.tonemap.maxCurvePoints). 8057 8058 A few examples, and their corresponding graphical mappings; these 8059 only specify the red channel and the precision is limited to 4 8060 digits, for conciseness. 8061 8062 Linear mapping: 8063 8064 android.tonemap.curveRed = [ 0, 0, 1.0, 1.0 ] 8065 8066  8067 8068 Invert mapping: 8069 8070 android.tonemap.curveRed = [ 0, 1.0, 1.0, 0 ] 8071 8072  8073 8074 Gamma 1/2.2 mapping, with 16 control points: 8075 8076 android.tonemap.curveRed = [ 8077 0.0000, 0.0000, 0.0667, 0.2920, 0.1333, 0.4002, 0.2000, 0.4812, 8078 0.2667, 0.5484, 0.3333, 0.6069, 0.4000, 0.6594, 0.4667, 0.7072, 8079 0.5333, 0.7515, 0.6000, 0.7928, 0.6667, 0.8317, 0.7333, 0.8685, 8080 0.8000, 0.9035, 0.8667, 0.9370, 0.9333, 0.9691, 1.0000, 1.0000 ] 8081 8082  8083 8084 Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points: 8085 8086 android.tonemap.curveRed = [ 8087 0.0000, 0.0000, 0.0667, 0.2864, 0.1333, 0.4007, 0.2000, 0.4845, 8088 0.2667, 0.5532, 0.3333, 0.6125, 0.4000, 0.6652, 0.4667, 0.7130, 8089 0.5333, 0.7569, 0.6000, 0.7977, 0.6667, 0.8360, 0.7333, 0.8721, 8090 0.8000, 0.9063, 0.8667, 0.9389, 0.9333, 0.9701, 1.0000, 1.0000 ] 8091 8092  8093 </details> 8094 <hal_details> 8095 For good quality of mapping, at least 128 control points are 8096 preferred. 8097 8098 A typical use case of this would be a gamma-1/2.2 curve, with as many 8099 control points used as are available. 8100 </hal_details> 8101 </entry> 8102 <entry name="curve" type="float" visibility="java_public" synthetic="true" 8103 typedef="tonemapCurve" 8104 hwlevel="full"> 8105 <description>Tonemapping / contrast / gamma curve to use when android.tonemap.mode 8106 is CONTRAST_CURVE.</description> 8107 <details> 8108 The tonemapCurve consist of three curves for each of red, green, and blue 8109 channels respectively. The following example uses the red channel as an 8110 example. The same logic applies to green and blue channel. 8111 Each channel's curve is defined by an array of control points: 8112 8113 curveRed = 8114 [ P0(in, out), P1(in, out), P2(in, out), P3(in, out), ..., PN(in, out) ] 8115 2 <= N <= android.tonemap.maxCurvePoints 8116 8117 These are sorted in order of increasing `Pin`; it is always 8118 guaranteed that input values 0.0 and 1.0 are included in the list to 8119 define a complete mapping. For input values between control points, 8120 the camera device must linearly interpolate between the control 8121 points. 8122 8123 Each curve can have an independent number of points, and the number 8124 of points can be less than max (that is, the request doesn't have to 8125 always provide a curve with number of points equivalent to 8126 android.tonemap.maxCurvePoints). 8127 8128 A few examples, and their corresponding graphical mappings; these 8129 only specify the red channel and the precision is limited to 4 8130 digits, for conciseness. 8131 8132 Linear mapping: 8133 8134 curveRed = [ (0, 0), (1.0, 1.0) ] 8135 8136  8137 8138 Invert mapping: 8139 8140 curveRed = [ (0, 1.0), (1.0, 0) ] 8141 8142  8143 8144 Gamma 1/2.2 mapping, with 16 control points: 8145 8146 curveRed = [ 8147 (0.0000, 0.0000), (0.0667, 0.2920), (0.1333, 0.4002), (0.2000, 0.4812), 8148 (0.2667, 0.5484), (0.3333, 0.6069), (0.4000, 0.6594), (0.4667, 0.7072), 8149 (0.5333, 0.7515), (0.6000, 0.7928), (0.6667, 0.8317), (0.7333, 0.8685), 8150 (0.8000, 0.9035), (0.8667, 0.9370), (0.9333, 0.9691), (1.0000, 1.0000) ] 8151 8152  8153 8154 Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points: 8155 8156 curveRed = [ 8157 (0.0000, 0.0000), (0.0667, 0.2864), (0.1333, 0.4007), (0.2000, 0.4845), 8158 (0.2667, 0.5532), (0.3333, 0.6125), (0.4000, 0.6652), (0.4667, 0.7130), 8159 (0.5333, 0.7569), (0.6000, 0.7977), (0.6667, 0.8360), (0.7333, 0.8721), 8160 (0.8000, 0.9063), (0.8667, 0.9389), (0.9333, 0.9701), (1.0000, 1.0000) ] 8161 8162  8163 </details> 8164 <hal_details> 8165 This entry is created by the framework from the curveRed, curveGreen and 8166 curveBlue entries. 8167 </hal_details> 8168 </entry> 8169 <entry name="mode" type="byte" visibility="public" enum="true" 8170 hwlevel="full"> 8171 <enum> 8172 <value>CONTRAST_CURVE 8173 <notes>Use the tone mapping curve specified in 8174 the android.tonemap.curve* entries. 8175 8176 All color enhancement and tonemapping must be disabled, except 8177 for applying the tonemapping curve specified by 8178 android.tonemap.curve. 8179 8180 Must not slow down frame rate relative to raw 8181 sensor output. 8182 </notes> 8183 </value> 8184 <value>FAST 8185 <notes> 8186 Advanced gamma mapping and color enhancement may be applied, without 8187 reducing frame rate compared to raw sensor output. 8188 </notes> 8189 </value> 8190 <value>HIGH_QUALITY 8191 <notes> 8192 High-quality gamma mapping and color enhancement will be applied, at 8193 the cost of possibly reduced frame rate compared to raw sensor output. 8194 </notes> 8195 </value> 8196 <value>GAMMA_VALUE 8197 <notes> 8198 Use the gamma value specified in android.tonemap.gamma to peform 8199 tonemapping. 8200 8201 All color enhancement and tonemapping must be disabled, except 8202 for applying the tonemapping curve specified by android.tonemap.gamma. 8203 8204 Must not slow down frame rate relative to raw sensor output. 8205 </notes> 8206 </value> 8207 <value>PRESET_CURVE 8208 <notes> 8209 Use the preset tonemapping curve specified in 8210 android.tonemap.presetCurve to peform tonemapping. 8211 8212 All color enhancement and tonemapping must be disabled, except 8213 for applying the tonemapping curve specified by 8214 android.tonemap.presetCurve. 8215 8216 Must not slow down frame rate relative to raw sensor output. 8217 </notes> 8218 </value> 8219 </enum> 8220 <description>High-level global contrast/gamma/tonemapping control. 8221 </description> 8222 <range>android.tonemap.availableToneMapModes</range> 8223 <details> 8224 When switching to an application-defined contrast curve by setting 8225 android.tonemap.mode to CONTRAST_CURVE, the curve is defined 8226 per-channel with a set of `(in, out)` points that specify the 8227 mapping from input high-bit-depth pixel value to the output 8228 low-bit-depth value. Since the actual pixel ranges of both input 8229 and output may change depending on the camera pipeline, the values 8230 are specified by normalized floating-point numbers. 8231 8232 More-complex color mapping operations such as 3D color look-up 8233 tables, selective chroma enhancement, or other non-linear color 8234 transforms will be disabled when android.tonemap.mode is 8235 CONTRAST_CURVE. 8236 8237 When using either FAST or HIGH_QUALITY, the camera device will 8238 emit its own tonemap curve in android.tonemap.curve. 8239 These values are always available, and as close as possible to the 8240 actually used nonlinear/nonglobal transforms. 8241 8242 If a request is sent with CONTRAST_CURVE with the camera device's 8243 provided curve in FAST or HIGH_QUALITY, the image's tonemap will be 8244 roughly the same.</details> 8245 </entry> 8246 </controls> 8247 <static> 8248 <entry name="maxCurvePoints" type="int32" visibility="public" 8249 hwlevel="full"> 8250 <description>Maximum number of supported points in the 8251 tonemap curve that can be used for android.tonemap.curve. 8252 </description> 8253 <details> 8254 If the actual number of points provided by the application (in android.tonemap.curve*) is 8255 less than this maximum, the camera device will resample the curve to its internal 8256 representation, using linear interpolation. 8257 8258 The output curves in the result metadata may have a different number 8259 of points than the input curves, and will represent the actual 8260 hardware curves used as closely as possible when linearly interpolated. 8261 </details> 8262 <hal_details> 8263 This value must be at least 64. This should be at least 128. 8264 </hal_details> 8265 </entry> 8266 <entry name="availableToneMapModes" type="byte" visibility="public" 8267 type_notes="list of enums" container="array" typedef="enumList" hwlevel="full"> 8268 <array> 8269 <size>n</size> 8270 </array> 8271 <description> 8272 List of tonemapping modes for android.tonemap.mode that are supported by this camera 8273 device. 8274 </description> 8275 <range>Any value listed in android.tonemap.mode</range> 8276 <details> 8277 Camera devices that support the MANUAL_POST_PROCESSING capability will always contain 8278 at least one of below mode combinations: 8279 8280 * CONTRAST_CURVE, FAST and HIGH_QUALITY 8281 * GAMMA_VALUE, PRESET_CURVE, FAST and HIGH_QUALITY 8282 8283 This includes all FULL level devices. 8284 </details> 8285 <hal_details> 8286 HAL must support both FAST and HIGH_QUALITY if automatic tonemap control is available 8287 on the camera device, but the underlying implementation can be the same for both modes. 8288 That is, if the highest quality implementation on the camera device does not slow down 8289 capture rate, then FAST and HIGH_QUALITY will generate the same output. 8290 </hal_details> 8291 </entry> 8292 </static> 8293 <dynamic> 8294 <clone entry="android.tonemap.curveBlue" kind="controls"> 8295 </clone> 8296 <clone entry="android.tonemap.curveGreen" kind="controls"> 8297 </clone> 8298 <clone entry="android.tonemap.curveRed" kind="controls"> 8299 </clone> 8300 <clone entry="android.tonemap.curve" kind="controls"> 8301 </clone> 8302 <clone entry="android.tonemap.mode" kind="controls"> 8303 </clone> 8304 </dynamic> 8305 <controls> 8306 <entry name="gamma" type="float" visibility="public"> 8307 <description> Tonemapping curve to use when android.tonemap.mode is 8308 GAMMA_VALUE 8309 </description> 8310 <details> 8311 The tonemap curve will be defined the following formula: 8312 * OUT = pow(IN, 1.0 / gamma) 8313 where IN and OUT is the input pixel value scaled to range [0.0, 1.0], 8314 pow is the power function and gamma is the gamma value specified by this 8315 key. 8316 8317 The same curve will be applied to all color channels. The camera device 8318 may clip the input gamma value to its supported range. The actual applied 8319 value will be returned in capture result. 8320 8321 The valid range of gamma value varies on different devices, but values 8322 within [1.0, 5.0] are guaranteed not to be clipped. 8323 </details> 8324 </entry> 8325 <entry name="presetCurve" type="byte" visibility="public" enum="true"> 8326 <enum> 8327 <value>SRGB 8328 <notes>Tonemapping curve is defined by sRGB</notes> 8329 </value> 8330 <value>REC709 8331 <notes>Tonemapping curve is defined by ITU-R BT.709</notes> 8332 </value> 8333 </enum> 8334 <description> Tonemapping curve to use when android.tonemap.mode is 8335 PRESET_CURVE 8336 </description> 8337 <details> 8338 The tonemap curve will be defined by specified standard. 8339 8340 sRGB (approximated by 16 control points): 8341 8342  8343 8344 Rec. 709 (approximated by 16 control points): 8345 8346  8347 8348 Note that above figures show a 16 control points approximation of preset 8349 curves. Camera devices may apply a different approximation to the curve. 8350 </details> 8351 </entry> 8352 </controls> 8353 <dynamic> 8354 <clone entry="android.tonemap.gamma" kind="controls"> 8355 </clone> 8356 <clone entry="android.tonemap.presetCurve" kind="controls"> 8357 </clone> 8358 </dynamic> 8359 </section> 8360 <section name="led"> 8361 <controls> 8362 <entry name="transmit" type="byte" visibility="hidden" optional="true" 8363 enum="true" typedef="boolean"> 8364 <enum> 8365 <value>OFF</value> 8366 <value>ON</value> 8367 </enum> 8368 <description>This LED is nominally used to indicate to the user 8369 that the camera is powered on and may be streaming images back to the 8370 Application Processor. In certain rare circumstances, the OS may 8371 disable this when video is processed locally and not transmitted to 8372 any untrusted applications. 8373 8374 In particular, the LED *must* always be on when the data could be 8375 transmitted off the device. The LED *should* always be on whenever 8376 data is stored locally on the device. 8377 8378 The LED *may* be off if a trusted application is using the data that 8379 doesn't violate the above rules. 8380 </description> 8381 </entry> 8382 </controls> 8383 <dynamic> 8384 <clone entry="android.led.transmit" kind="controls"></clone> 8385 </dynamic> 8386 <static> 8387 <entry name="availableLeds" type="byte" visibility="hidden" optional="true" 8388 enum="true" 8389 container="array"> 8390 <array> 8391 <size>n</size> 8392 </array> 8393 <enum> 8394 <value>TRANSMIT 8395 <notes>android.led.transmit control is used.</notes> 8396 </value> 8397 </enum> 8398 <description>A list of camera LEDs that are available on this system. 8399 </description> 8400 </entry> 8401 </static> 8402 </section> 8403 <section name="info"> 8404 <static> 8405 <entry name="supportedHardwareLevel" type="byte" visibility="public" 8406 enum="true" hwlevel="legacy"> 8407 <enum> 8408 <value> 8409 LIMITED 8410 <notes> 8411 This camera device does not have enough capabilities to qualify as a `FULL` device or 8412 better. 8413 8414 Only the stream configurations listed in the `LEGACY` and `LIMITED` tables in the 8415 {@link ACameraDevice_createCaptureSession} documentation are guaranteed to be supported. 8416 8417 All `LIMITED` devices support the `BACKWARDS_COMPATIBLE` capability, indicating basic 8418 support for color image capture. The only exception is that the device may 8419 alternatively support only the `DEPTH_OUTPUT` capability, if it can only output depth 8420 measurements and not color images. 8421 8422 `LIMITED` devices and above require the use of android.control.aePrecaptureTrigger 8423 to lock exposure metering (and calculate flash power, for cameras with flash) before 8424 capturing a high-quality still image. 8425 8426 A `LIMITED` device that only lists the `BACKWARDS_COMPATIBLE` capability is only 8427 required to support full-automatic operation and post-processing (`OFF` is not 8428 supported for android.control.aeMode, android.control.afMode, or 8429 android.control.awbMode) 8430 8431 Additional capabilities may optionally be supported by a `LIMITED`-level device, and 8432 can be checked for in android.request.availableCapabilities. 8433 </notes> 8434 </value> 8435 <value> 8436 FULL 8437 <notes> 8438 This camera device is capable of supporting advanced imaging applications. 8439 8440 The stream configurations listed in the `FULL`, `LEGACY` and `LIMITED` tables in the 8441 {@link ACameraDevice_createCaptureSession} documentation are guaranteed to be supported. 8442 8443 A `FULL` device will support below capabilities: 8444 8445 * `BURST_CAPTURE` capability (android.request.availableCapabilities contains 8446 `BURST_CAPTURE`) 8447 * Per frame control (android.sync.maxLatency `==` PER_FRAME_CONTROL) 8448 * Manual sensor control (android.request.availableCapabilities contains `MANUAL_SENSOR`) 8449 * Manual post-processing control (android.request.availableCapabilities contains 8450 `MANUAL_POST_PROCESSING`) 8451 * The required exposure time range defined in android.sensor.info.exposureTimeRange 8452 * The required maxFrameDuration defined in android.sensor.info.maxFrameDuration 8453 8454 Note: 8455 Pre-API level 23, FULL devices also supported arbitrary cropping region 8456 (android.scaler.croppingType `== FREEFORM`); this requirement was relaxed in API level 8457 23, and `FULL` devices may only support `CENTERED` cropping. 8458 </notes> 8459 </value> 8460 <value> 8461 LEGACY 8462 <notes> 8463 This camera device is running in backward compatibility mode. 8464 8465 Only the stream configurations listed in the `LEGACY` table in the {@link 8466 ACameraDevice_createCaptureSession} documentation are supported. 8467 8468 A `LEGACY` device does not support per-frame control, manual sensor control, manual 8469 post-processing, arbitrary cropping regions, and has relaxed performance constraints. 8470 No additional capabilities beyond `BACKWARD_COMPATIBLE` will ever be listed by a 8471 `LEGACY` device in android.request.availableCapabilities. 8472 8473 In addition, the android.control.aePrecaptureTrigger is not functional on `LEGACY` 8474 devices. Instead, every request that includes a JPEG-format output target is treated 8475 as triggering a still capture, internally executing a precapture trigger. This may 8476 fire the flash for flash power metering during precapture, and then fire the flash 8477 for the final capture, if a flash is available on the device and the AE mode is set to 8478 enable the flash. 8479 </notes> 8480 </value> 8481 <value> 8482 3 8483 <notes> 8484 This camera device is capable of YUV reprocessing and RAW data capture, in addition to 8485 FULL-level capabilities. 8486 8487 The stream configurations listed in the `LEVEL_3`, `RAW`, `FULL`, `LEGACY` and 8488 `LIMITED` tables in the {@link 8489 ACameraDevice_createCaptureSession} 8490 documentation are guaranteed to be supported. 8491 8492 The following additional capabilities are guaranteed to be supported: 8493 8494 * `YUV_REPROCESSING` capability (android.request.availableCapabilities contains 8495 `YUV_REPROCESSING`) 8496 * `RAW` capability (android.request.availableCapabilities contains 8497 `RAW`) 8498 </notes> 8499 </value> 8500 </enum> 8501 <description> 8502 Generally classifies the overall set of the camera device functionality. 8503 </description> 8504 <details> 8505 The supported hardware level is a high-level description of the camera device's 8506 capabilities, summarizing several capabilities into one field. Each level adds additional 8507 features to the previous one, and is always a strict superset of the previous level. 8508 The ordering is `LEGACY < LIMITED < FULL < LEVEL_3`. 8509 8510 Starting from `LEVEL_3`, the level enumerations are guaranteed to be in increasing 8511 numerical value as well. To check if a given device is at least at a given hardware level, 8512 the following code snippet can be used: 8513 8514 // Returns true if the device supports the required hardware level, or better. 8515 boolean isHardwareLevelSupported(CameraCharacteristics c, int requiredLevel) { 8516 int deviceLevel = c.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL); 8517 if (deviceLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY) { 8518 return requiredLevel == deviceLevel; 8519 } 8520 // deviceLevel is not LEGACY, can use numerical sort 8521 return requiredLevel <= deviceLevel; 8522 } 8523 8524 At a high level, the levels are: 8525 8526 * `LEGACY` devices operate in a backwards-compatibility mode for older 8527 Android devices, and have very limited capabilities. 8528 * `LIMITED` devices represent the 8529 baseline feature set, and may also include additional capabilities that are 8530 subsets of `FULL`. 8531 * `FULL` devices additionally support per-frame manual control of sensor, flash, lens and 8532 post-processing settings, and image capture at a high rate. 8533 * `LEVEL_3` devices additionally support YUV reprocessing and RAW image capture, along 8534 with additional output stream configurations. 8535 8536 See the individual level enums for full descriptions of the supported capabilities. The 8537 android.request.availableCapabilities entry describes the device's capabilities at a 8538 finer-grain level, if needed. In addition, many controls have their available settings or 8539 ranges defined in individual metadata tag entries in this document. 8540 8541 Some features are not part of any particular hardware level or capability and must be 8542 queried separately. These include: 8543 8544 * Calibrated timestamps (android.sensor.info.timestampSource `==` REALTIME) 8545 * Precision lens control (android.lens.info.focusDistanceCalibration `==` CALIBRATED) 8546 * Face detection (android.statistics.info.availableFaceDetectModes) 8547 * Optical or electrical image stabilization 8548 (android.lens.info.availableOpticalStabilization, 8549 android.control.availableVideoStabilizationModes) 8550 8551 </details> 8552 <hal_details> 8553 The camera 3 HAL device can implement one of three possible operational modes; LIMITED, 8554 FULL, and LEVEL_3. 8555 8556 FULL support or better is expected from new higher-end devices. Limited 8557 mode has hardware requirements roughly in line with those for a camera HAL device v1 8558 implementation, and is expected from older or inexpensive devices. Each level is a strict 8559 superset of the previous level, and they share the same essential operational flow. 8560 8561 For full details refer to "S3. Operational Modes" in camera3.h 8562 8563 Camera HAL3+ must not implement LEGACY mode. It is there for backwards compatibility in 8564 the `android.hardware.camera2` user-facing API only on HALv1 devices, and is implemented 8565 by the camera framework code. 8566 </hal_details> 8567 </entry> 8568 </static> 8569 </section> 8570 <section name="blackLevel"> 8571 <controls> 8572 <entry name="lock" type="byte" visibility="public" enum="true" 8573 typedef="boolean" hwlevel="full"> 8574 <enum> 8575 <value>OFF</value> 8576 <value>ON</value> 8577 </enum> 8578 <description> Whether black-level compensation is locked 8579 to its current values, or is free to vary.</description> 8580 <details>When set to `true` (ON), the values used for black-level 8581 compensation will not change until the lock is set to 8582 `false` (OFF). 8583 8584 Since changes to certain capture parameters (such as 8585 exposure time) may require resetting of black level 8586 compensation, the camera device must report whether setting 8587 the black level lock was successful in the output result 8588 metadata. 8589 8590 For example, if a sequence of requests is as follows: 8591 8592 * Request 1: Exposure = 10ms, Black level lock = OFF 8593 * Request 2: Exposure = 10ms, Black level lock = ON 8594 * Request 3: Exposure = 10ms, Black level lock = ON 8595 * Request 4: Exposure = 20ms, Black level lock = ON 8596 * Request 5: Exposure = 20ms, Black level lock = ON 8597 * Request 6: Exposure = 20ms, Black level lock = ON 8598 8599 And the exposure change in Request 4 requires the camera 8600 device to reset the black level offsets, then the output 8601 result metadata is expected to be: 8602 8603 * Result 1: Exposure = 10ms, Black level lock = OFF 8604 * Result 2: Exposure = 10ms, Black level lock = ON 8605 * Result 3: Exposure = 10ms, Black level lock = ON 8606 * Result 4: Exposure = 20ms, Black level lock = OFF 8607 * Result 5: Exposure = 20ms, Black level lock = ON 8608 * Result 6: Exposure = 20ms, Black level lock = ON 8609 8610 This indicates to the application that on frame 4, black 8611 levels were reset due to exposure value changes, and pixel 8612 values may not be consistent across captures. 8613 8614 The camera device will maintain the lock to the extent 8615 possible, only overriding the lock to OFF when changes to 8616 other request parameters require a black level recalculation 8617 or reset. 8618 </details> 8619 <hal_details> 8620 If for some reason black level locking is no longer possible 8621 (for example, the analog gain has changed, which forces 8622 black level offsets to be recalculated), then the HAL must 8623 override this request (and it must report 'OFF' when this 8624 does happen) until the next capture for which locking is 8625 possible again.</hal_details> 8626 <tag id="HAL2" /> 8627 </entry> 8628 </controls> 8629 <dynamic> 8630 <clone entry="android.blackLevel.lock" 8631 kind="controls"> 8632 <details> 8633 Whether the black level offset was locked for this frame. Should be 8634 ON if android.blackLevel.lock was ON in the capture request, unless 8635 a change in other capture settings forced the camera device to 8636 perform a black level reset. 8637 </details> 8638 </clone> 8639 </dynamic> 8640 </section> 8641 <section name="sync"> 8642 <dynamic> 8643 <entry name="frameNumber" type="int64" visibility="ndk_public" 8644 enum="true" hwlevel="legacy"> 8645 <enum> 8646 <value id="-1">CONVERGING 8647 <notes> 8648 The current result is not yet fully synchronized to any request. 8649 8650 Synchronization is in progress, and reading metadata from this 8651 result may include a mix of data that have taken effect since the 8652 last synchronization time. 8653 8654 In some future result, within android.sync.maxLatency frames, 8655 this value will update to the actual frame number frame number 8656 the result is guaranteed to be synchronized to (as long as the 8657 request settings remain constant). 8658 </notes> 8659 </value> 8660 <value id="-2">UNKNOWN 8661 <notes> 8662 The current result's synchronization status is unknown. 8663 8664 The result may have already converged, or it may be in 8665 progress. Reading from this result may include some mix 8666 of settings from past requests. 8667 8668 After a settings change, the new settings will eventually all 8669 take effect for the output buffers and results. However, this 8670 value will not change when that happens. Altering settings 8671 rapidly may provide outcomes using mixes of settings from recent 8672 requests. 8673 8674 This value is intended primarily for backwards compatibility with 8675 the older camera implementations (for android.hardware.Camera). 8676 </notes> 8677 </value> 8678 </enum> 8679 <description>The frame number corresponding to the last request 8680 with which the output result (metadata + buffers) has been fully 8681 synchronized.</description> 8682 <range>Either a non-negative value corresponding to a 8683 `frame_number`, or one of the two enums (CONVERGING / UNKNOWN). 8684 </range> 8685 <details> 8686 When a request is submitted to the camera device, there is usually a 8687 delay of several frames before the controls get applied. A camera 8688 device may either choose to account for this delay by implementing a 8689 pipeline and carefully submit well-timed atomic control updates, or 8690 it may start streaming control changes that span over several frame 8691 boundaries. 8692 8693 In the latter case, whenever a request's settings change relative to 8694 the previous submitted request, the full set of changes may take 8695 multiple frame durations to fully take effect. Some settings may 8696 take effect sooner (in less frame durations) than others. 8697 8698 While a set of control changes are being propagated, this value 8699 will be CONVERGING. 8700 8701 Once it is fully known that a set of control changes have been 8702 finished propagating, and the resulting updated control settings 8703 have been read back by the camera device, this value will be set 8704 to a non-negative frame number (corresponding to the request to 8705 which the results have synchronized to). 8706 8707 Older camera device implementations may not have a way to detect 8708 when all camera controls have been applied, and will always set this 8709 value to UNKNOWN. 8710 8711 FULL capability devices will always have this value set to the 8712 frame number of the request corresponding to this result. 8713 8714 _Further details_: 8715 8716 * Whenever a request differs from the last request, any future 8717 results not yet returned may have this value set to CONVERGING (this 8718 could include any in-progress captures not yet returned by the camera 8719 device, for more details see pipeline considerations below). 8720 * Submitting a series of multiple requests that differ from the 8721 previous request (e.g. r1, r2, r3 s.t. r1 != r2 != r3) 8722 moves the new synchronization frame to the last non-repeating 8723 request (using the smallest frame number from the contiguous list of 8724 repeating requests). 8725 * Submitting the same request repeatedly will not change this value 8726 to CONVERGING, if it was already a non-negative value. 8727 * When this value changes to non-negative, that means that all of the 8728 metadata controls from the request have been applied, all of the 8729 metadata controls from the camera device have been read to the 8730 updated values (into the result), and all of the graphics buffers 8731 corresponding to this result are also synchronized to the request. 8732 8733 _Pipeline considerations_: 8734 8735 Submitting a request with updated controls relative to the previously 8736 submitted requests may also invalidate the synchronization state 8737 of all the results corresponding to currently in-flight requests. 8738 8739 In other words, results for this current request and up to 8740 android.request.pipelineMaxDepth prior requests may have their 8741 android.sync.frameNumber change to CONVERGING. 8742 </details> 8743 <hal_details> 8744 Using UNKNOWN here is illegal unless android.sync.maxLatency 8745 is also UNKNOWN. 8746 8747 FULL capability devices should simply set this value to the 8748 `frame_number` of the request this result corresponds to. 8749 </hal_details> 8750 <tag id="V1" /> 8751 </entry> 8752 </dynamic> 8753 <static> 8754 <entry name="maxLatency" type="int32" visibility="public" enum="true" 8755 hwlevel="legacy"> 8756 <enum> 8757 <value id="0">PER_FRAME_CONTROL 8758 <notes> 8759 Every frame has the requests immediately applied. 8760 8761 Changing controls over multiple requests one after another will 8762 produce results that have those controls applied atomically 8763 each frame. 8764 8765 All FULL capability devices will have this as their maxLatency. 8766 </notes> 8767 </value> 8768 <value id="-1">UNKNOWN 8769 <notes> 8770 Each new frame has some subset (potentially the entire set) 8771 of the past requests applied to the camera settings. 8772 8773 By submitting a series of identical requests, the camera device 8774 will eventually have the camera settings applied, but it is 8775 unknown when that exact point will be. 8776 8777 All LEGACY capability devices will have this as their maxLatency. 8778 </notes> 8779 </value> 8780 </enum> 8781 <description> 8782 The maximum number of frames that can occur after a request 8783 (different than the previous) has been submitted, and before the 8784 result's state becomes synchronized. 8785 </description> 8786 <units>Frame counts</units> 8787 <range>A positive value, PER_FRAME_CONTROL, or UNKNOWN.</range> 8788 <details> 8789 This defines the maximum distance (in number of metadata results), 8790 between the frame number of the request that has new controls to apply 8791 and the frame number of the result that has all the controls applied. 8792 8793 In other words this acts as an upper boundary for how many frames 8794 must occur before the camera device knows for a fact that the new 8795 submitted camera settings have been applied in outgoing frames. 8796 </details> 8797 <hal_details> 8798 For example if maxLatency was 2, 8799 8800 initial request = X (repeating) 8801 request1 = X 8802 request2 = Y 8803 request3 = Y 8804 request4 = Y 8805 8806 where requestN has frameNumber N, and the first of the repeating 8807 initial request's has frameNumber F (and F < 1). 8808 8809 initial result = X' + { android.sync.frameNumber == F } 8810 result1 = X' + { android.sync.frameNumber == F } 8811 result2 = X' + { android.sync.frameNumber == CONVERGING } 8812 result3 = X' + { android.sync.frameNumber == CONVERGING } 8813 result4 = X' + { android.sync.frameNumber == 2 } 8814 8815 where resultN has frameNumber N. 8816 8817 Since `result4` has a `frameNumber == 4` and 8818 `android.sync.frameNumber == 2`, the distance is clearly 8819 `4 - 2 = 2`. 8820 8821 Use `frame_count` from camera3_request_t instead of 8822 android.request.frameCount or 8823 `{@link android.hardware.camera2.CaptureResult#getFrameNumber}`. 8824 8825 LIMITED devices are strongly encouraged to use a non-negative 8826 value. If UNKNOWN is used here then app developers do not have a way 8827 to know when sensor settings have been applied. 8828 </hal_details> 8829 <tag id="V1" /> 8830 </entry> 8831 </static> 8832 </section> 8833 <section name="reprocess"> 8834 <controls> 8835 <entry name="effectiveExposureFactor" type="float" visibility="java_public" hwlevel="limited"> 8836 <description> 8837 The amount of exposure time increase factor applied to the original output 8838 frame by the application processing before sending for reprocessing. 8839 </description> 8840 <units>Relative exposure time increase factor.</units> 8841 <range> &gt;= 1.0</range> 8842 <details> 8843 This is optional, and will be supported if the camera device supports YUV_REPROCESSING 8844 capability (android.request.availableCapabilities contains YUV_REPROCESSING). 8845 8846 For some YUV reprocessing use cases, the application may choose to filter the original 8847 output frames to effectively reduce the noise to the same level as a frame that was 8848 captured with longer exposure time. To be more specific, assuming the original captured 8849 images were captured with a sensitivity of S and an exposure time of T, the model in 8850 the camera device is that the amount of noise in the image would be approximately what 8851 would be expected if the original capture parameters had been a sensitivity of 8852 S/effectiveExposureFactor and an exposure time of T*effectiveExposureFactor, rather 8853 than S and T respectively. If the captured images were processed by the application 8854 before being sent for reprocessing, then the application may have used image processing 8855 algorithms and/or multi-frame image fusion to reduce the noise in the 8856 application-processed images (input images). By using the effectiveExposureFactor 8857 control, the application can communicate to the camera device the actual noise level 8858 improvement in the application-processed image. With this information, the camera 8859 device can select appropriate noise reduction and edge enhancement parameters to avoid 8860 excessive noise reduction (android.noiseReduction.mode) and insufficient edge 8861 enhancement (android.edge.mode) being applied to the reprocessed frames. 8862 8863 For example, for multi-frame image fusion use case, the application may fuse 8864 multiple output frames together to a final frame for reprocessing. When N image are 8865 fused into 1 image for reprocessing, the exposure time increase factor could be up to 8866 square root of N (based on a simple photon shot noise model). The camera device will 8867 adjust the reprocessing noise reduction and edge enhancement parameters accordingly to 8868 produce the best quality images. 8869 8870 This is relative factor, 1.0 indicates the application hasn't processed the input 8871 buffer in a way that affects its effective exposure time. 8872 8873 This control is only effective for YUV reprocessing capture request. For noise 8874 reduction reprocessing, it is only effective when `android.noiseReduction.mode != OFF`. 8875 Similarly, for edge enhancement reprocessing, it is only effective when 8876 `android.edge.mode != OFF`. 8877 </details> 8878 <tag id="REPROC" /> 8879 </entry> 8880 </controls> 8881 <dynamic> 8882 <clone entry="android.reprocess.effectiveExposureFactor" kind="controls"> 8883 </clone> 8884 </dynamic> 8885 <static> 8886 <entry name="maxCaptureStall" type="int32" visibility="java_public" hwlevel="limited"> 8887 <description> 8888 The maximal camera capture pipeline stall (in unit of frame count) introduced by a 8889 reprocess capture request. 8890 </description> 8891 <units>Number of frames.</units> 8892 <range> &lt;= 4</range> 8893 <details> 8894 The key describes the maximal interference that one reprocess (input) request 8895 can introduce to the camera simultaneous streaming of regular (output) capture 8896 requests, including repeating requests. 8897 8898 When a reprocessing capture request is submitted while a camera output repeating request 8899 (e.g. preview) is being served by the camera device, it may preempt the camera capture 8900 pipeline for at least one frame duration so that the camera device is unable to process 8901 the following capture request in time for the next sensor start of exposure boundary. 8902 When this happens, the application may observe a capture time gap (longer than one frame 8903 duration) between adjacent capture output frames, which usually exhibits as preview 8904 glitch if the repeating request output targets include a preview surface. This key gives 8905 the worst-case number of frame stall introduced by one reprocess request with any kind of 8906 formats/sizes combination. 8907 8908 If this key reports 0, it means a reprocess request doesn't introduce any glitch to the 8909 ongoing camera repeating request outputs, as if this reprocess request is never issued. 8910 8911 This key is supported if the camera device supports PRIVATE or YUV reprocessing ( 8912 i.e. android.request.availableCapabilities contains PRIVATE_REPROCESSING or 8913 YUV_REPROCESSING). 8914 </details> 8915 <tag id="REPROC" /> 8916 </entry> 8917 </static> 8918 </section> 8919 <section name="depth"> 8920 <static> 8921 <entry name="maxDepthSamples" type="int32" visibility="system" hwlevel="limited"> 8922 <description>Maximum number of points that a depth point cloud may contain. 8923 </description> 8924 <details> 8925 If a camera device supports outputting depth range data in the form of a depth point 8926 cloud ({@link android.graphics.ImageFormat#DEPTH_POINT_CLOUD}), this is the maximum 8927 number of points an output buffer may contain. 8928 8929 Any given buffer may contain between 0 and maxDepthSamples points, inclusive. 8930 If output in the depth point cloud format is not supported, this entry will 8931 not be defined. 8932 </details> 8933 <tag id="DEPTH" /> 8934 </entry> 8935 <entry name="availableDepthStreamConfigurations" type="int32" visibility="ndk_public" 8936 enum="true" container="array" typedef="streamConfiguration" hwlevel="limited"> 8937 <array> 8938 <size>n</size> 8939 <size>4</size> 8940 </array> 8941 <enum> 8942 <value>OUTPUT</value> 8943 <value>INPUT</value> 8944 </enum> 8945 <description>The available depth dataspace stream 8946 configurations that this camera device supports 8947 (i.e. format, width, height, output/input stream). 8948 </description> 8949 <details> 8950 These are output stream configurations for use with 8951 dataSpace HAL_DATASPACE_DEPTH. The configurations are 8952 listed as `(format, width, height, input?)` tuples. 8953 8954 Only devices that support depth output for at least 8955 the HAL_PIXEL_FORMAT_Y16 dense depth map may include 8956 this entry. 8957 8958 A device that also supports the HAL_PIXEL_FORMAT_BLOB 8959 sparse depth point cloud must report a single entry for 8960 the format in this list as `(HAL_PIXEL_FORMAT_BLOB, 8961 android.depth.maxDepthSamples, 1, OUTPUT)` in addition to 8962 the entries for HAL_PIXEL_FORMAT_Y16. 8963 </details> 8964 <tag id="DEPTH" /> 8965 </entry> 8966 <entry name="availableDepthMinFrameDurations" type="int64" visibility="ndk_public" 8967 container="array" typedef="streamConfigurationDuration" hwlevel="limited"> 8968 <array> 8969 <size>4</size> 8970 <size>n</size> 8971 </array> 8972 <description>This lists the minimum frame duration for each 8973 format/size combination for depth output formats. 8974 </description> 8975 <units>(format, width, height, ns) x n</units> 8976 <details> 8977 This should correspond to the frame duration when only that 8978 stream is active, with all processing (typically in android.*.mode) 8979 set to either OFF or FAST. 8980 8981 When multiple streams are used in a request, the minimum frame 8982 duration will be max(individual stream min durations). 8983 8984 The minimum frame duration of a stream (of a particular format, size) 8985 is the same regardless of whether the stream is input or output. 8986 8987 See android.sensor.frameDuration and 8988 android.scaler.availableStallDurations for more details about 8989 calculating the max frame rate. 8990 </details> 8991 <tag id="DEPTH" /> 8992 </entry> 8993 <entry name="availableDepthStallDurations" type="int64" visibility="ndk_public" 8994 container="array" typedef="streamConfigurationDuration" hwlevel="limited"> 8995 <array> 8996 <size>4</size> 8997 <size>n</size> 8998 </array> 8999 <description>This lists the maximum stall duration for each 9000 output format/size combination for depth streams. 9001 </description> 9002 <units>(format, width, height, ns) x n</units> 9003 <details> 9004 A stall duration is how much extra time would get added 9005 to the normal minimum frame duration for a repeating request 9006 that has streams with non-zero stall. 9007 9008 This functions similarly to 9009 android.scaler.availableStallDurations for depth 9010 streams. 9011 9012 All depth output stream formats may have a nonzero stall 9013 duration. 9014 </details> 9015 <tag id="DEPTH" /> 9016 </entry> 9017 <entry name="depthIsExclusive" type="byte" visibility="public" 9018 enum="true" typedef="boolean" hwlevel="limited"> 9019 <enum> 9020 <value>FALSE</value> 9021 <value>TRUE</value> 9022 </enum> 9023 <description>Indicates whether a capture request may target both a 9024 DEPTH16 / DEPTH_POINT_CLOUD output, and normal color outputs (such as 9025 YUV_420_888, JPEG, or RAW) simultaneously. 9026 </description> 9027 <details> 9028 If TRUE, including both depth and color outputs in a single 9029 capture request is not supported. An application must interleave color 9030 and depth requests. If FALSE, a single request can target both types 9031 of output. 9032 9033 Typically, this restriction exists on camera devices that 9034 need to emit a specific pattern or wavelength of light to 9035 measure depth values, which causes the color image to be 9036 corrupted during depth measurement. 9037 </details> 9038 </entry> 9039 </static> 9040 </section> 9041 </namespace> 9042</metadata> 9043
