CaptureRequest.java revision 870922be2399766078d0a4e42a0158ecb9eb1f86
1/* 2 * Copyright (C) 2013 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 17package android.hardware.camera2; 18 19import android.hardware.camera2.impl.CameraMetadataNative; 20import android.os.Parcel; 21import android.os.Parcelable; 22import android.view.Surface; 23 24import java.util.HashSet; 25import java.util.Objects; 26 27 28/** 29 * <p>An immutable package of settings and outputs needed to capture a single 30 * image from the camera device.</p> 31 * 32 * <p>Contains the configuration for the capture hardware (sensor, lens, flash), 33 * the processing pipeline, the control algorithms, and the output buffers. Also 34 * contains the list of target Surfaces to send image data to for this 35 * capture.</p> 36 * 37 * <p>CaptureRequests can be created by using a {@link Builder} instance, 38 * obtained by calling {@link CameraDevice#createCaptureRequest}</p> 39 * 40 * <p>CaptureRequests are given to {@link CameraDevice#capture} or 41 * {@link CameraDevice#setRepeatingRequest} to capture images from a camera.</p> 42 * 43 * <p>Each request can specify a different subset of target Surfaces for the 44 * camera to send the captured data to. All the surfaces used in a request must 45 * be part of the surface list given to the last call to 46 * {@link CameraDevice#configureOutputs}, when the request is submitted to the 47 * camera device.</p> 48 * 49 * <p>For example, a request meant for repeating preview might only include the 50 * Surface for the preview SurfaceView or SurfaceTexture, while a 51 * high-resolution still capture would also include a Surface from a ImageReader 52 * configured for high-resolution JPEG images.</p> 53 * 54 * @see CameraDevice#capture 55 * @see CameraDevice#setRepeatingRequest 56 * @see CameraDevice#createCaptureRequest 57 */ 58public final class CaptureRequest extends CameraMetadata implements Parcelable { 59 60 private final HashSet<Surface> mSurfaceSet; 61 private final CameraMetadataNative mSettings; 62 63 private Object mUserTag; 64 65 /** 66 * Construct empty request. 67 * 68 * Used by Binder to unparcel this object only. 69 */ 70 private CaptureRequest() { 71 mSettings = new CameraMetadataNative(); 72 mSurfaceSet = new HashSet<Surface>(); 73 } 74 75 /** 76 * Clone from source capture request. 77 * 78 * Used by the Builder to create an immutable copy. 79 */ 80 @SuppressWarnings("unchecked") 81 private CaptureRequest(CaptureRequest source) { 82 mSettings = new CameraMetadataNative(source.mSettings); 83 mSurfaceSet = (HashSet<Surface>) source.mSurfaceSet.clone(); 84 mUserTag = source.mUserTag; 85 } 86 87 /** 88 * Take ownership of passed-in settings. 89 * 90 * Used by the Builder to create a mutable CaptureRequest. 91 */ 92 private CaptureRequest(CameraMetadataNative settings) { 93 mSettings = settings; 94 mSurfaceSet = new HashSet<Surface>(); 95 } 96 97 @SuppressWarnings("unchecked") 98 @Override 99 public <T> T get(Key<T> key) { 100 return mSettings.get(key); 101 } 102 103 /** 104 * Retrieve the tag for this request, if any. 105 * 106 * <p>This tag is not used for anything by the camera device, but can be 107 * used by an application to easily identify a CaptureRequest when it is 108 * returned by 109 * {@link CameraDevice.CaptureListener#onCaptureCompleted CaptureListener.onCaptureCompleted} 110 * </p> 111 * 112 * @return the last tag Object set on this request, or {@code null} if 113 * no tag has been set. 114 * @see Builder#setTag 115 */ 116 public Object getTag() { 117 return mUserTag; 118 } 119 120 /** 121 * Determine whether this CaptureRequest is equal to another CaptureRequest. 122 * 123 * <p>A request is considered equal to another is if it's set of key/values is equal, it's 124 * list of output surfaces is equal, and the user tag is equal.</p> 125 * 126 * @param other Another instance of CaptureRequest. 127 * 128 * @return True if the requests are the same, false otherwise. 129 */ 130 @Override 131 public boolean equals(Object other) { 132 return other instanceof CaptureRequest 133 && equals((CaptureRequest)other); 134 } 135 136 private boolean equals(CaptureRequest other) { 137 return other != null 138 && Objects.equals(mUserTag, other.mUserTag) 139 && mSurfaceSet.equals(other.mSurfaceSet) 140 && mSettings.equals(other.mSettings); 141 } 142 143 @Override 144 public int hashCode() { 145 return mSettings.hashCode(); 146 } 147 148 public static final Parcelable.Creator<CaptureRequest> CREATOR = 149 new Parcelable.Creator<CaptureRequest>() { 150 @Override 151 public CaptureRequest createFromParcel(Parcel in) { 152 CaptureRequest request = new CaptureRequest(); 153 request.readFromParcel(in); 154 155 return request; 156 } 157 158 @Override 159 public CaptureRequest[] newArray(int size) { 160 return new CaptureRequest[size]; 161 } 162 }; 163 164 /** 165 * Expand this object from a Parcel. 166 * Hidden since this breaks the immutability of CaptureRequest, but is 167 * needed to receive CaptureRequests with aidl. 168 * 169 * @param in The parcel from which the object should be read 170 * @hide 171 */ 172 public void readFromParcel(Parcel in) { 173 mSettings.readFromParcel(in); 174 175 mSurfaceSet.clear(); 176 177 Parcelable[] parcelableArray = in.readParcelableArray(Surface.class.getClassLoader()); 178 179 if (parcelableArray == null) { 180 return; 181 } 182 183 for (Parcelable p : parcelableArray) { 184 Surface s = (Surface) p; 185 mSurfaceSet.add(s); 186 } 187 } 188 189 @Override 190 public int describeContents() { 191 return 0; 192 } 193 194 @Override 195 public void writeToParcel(Parcel dest, int flags) { 196 mSettings.writeToParcel(dest, flags); 197 dest.writeParcelableArray(mSurfaceSet.toArray(new Surface[mSurfaceSet.size()]), flags); 198 } 199 200 /** 201 * A builder for capture requests. 202 * 203 * <p>To obtain a builder instance, use the 204 * {@link CameraDevice#createCaptureRequest} method, which initializes the 205 * request fields to one of the templates defined in {@link CameraDevice}. 206 * 207 * @see CameraDevice#createCaptureRequest 208 * @see #TEMPLATE_PREVIEW 209 * @see #TEMPLATE_RECORD 210 * @see #TEMPLATE_STILL_CAPTURE 211 * @see #TEMPLATE_VIDEO_SNAPSHOT 212 * @see #TEMPLATE_MANUAL 213 */ 214 public final static class Builder { 215 216 private final CaptureRequest mRequest; 217 218 /** 219 * Initialize the builder using the template; the request takes 220 * ownership of the template. 221 * 222 * @hide 223 */ 224 public Builder(CameraMetadataNative template) { 225 mRequest = new CaptureRequest(template); 226 } 227 228 /** 229 * <p>Add a surface to the list of targets for this request</p> 230 * 231 * <p>The Surface added must be one of the surfaces included in the most 232 * recent call to {@link CameraDevice#configureOutputs}, when the 233 * request is given to the camera device.</p> 234 * 235 * <p>Adding a target more than once has no effect.</p> 236 * 237 * @param outputTarget Surface to use as an output target for this request 238 */ 239 public void addTarget(Surface outputTarget) { 240 mRequest.mSurfaceSet.add(outputTarget); 241 } 242 243 /** 244 * <p>Remove a surface from the list of targets for this request.</p> 245 * 246 * <p>Removing a target that is not currently added has no effect.</p> 247 * 248 * @param outputTarget Surface to use as an output target for this request 249 */ 250 public void removeTarget(Surface outputTarget) { 251 mRequest.mSurfaceSet.remove(outputTarget); 252 } 253 254 /** 255 * Set a capture request field to a value. The field definitions can be 256 * found in {@link CaptureRequest}. 257 * 258 * @param key The metadata field to write. 259 * @param value The value to set the field to, which must be of a matching 260 * type to the key. 261 */ 262 public <T> void set(Key<T> key, T value) { 263 mRequest.mSettings.set(key, value); 264 } 265 266 /** 267 * Get a capture request field value. The field definitions can be 268 * found in {@link CaptureRequest}. 269 * 270 * @throws IllegalArgumentException if the key was not valid 271 * 272 * @param key The metadata field to read. 273 * @return The value of that key, or {@code null} if the field is not set. 274 */ 275 public <T> T get(Key<T> key) { 276 return mRequest.mSettings.get(key); 277 } 278 279 /** 280 * Set a tag for this request. 281 * 282 * <p>This tag is not used for anything by the camera device, but can be 283 * used by an application to easily identify a CaptureRequest when it is 284 * returned by 285 * {@link CameraDevice.CaptureListener#onCaptureCompleted CaptureListener.onCaptureCompleted} 286 * 287 * @param tag an arbitrary Object to store with this request 288 * @see CaptureRequest#getTag 289 */ 290 public void setTag(Object tag) { 291 mRequest.mUserTag = tag; 292 } 293 294 /** 295 * Build a request using the current target Surfaces and settings. 296 * 297 * @return A new capture request instance, ready for submission to the 298 * camera device. 299 */ 300 public CaptureRequest build() { 301 return new CaptureRequest(mRequest); 302 } 303 304 305 /** 306 * @hide 307 */ 308 public boolean isEmpty() { 309 return mRequest.mSettings.isEmpty(); 310 } 311 312 } 313 314 /*@O~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~ 315 * The key entries below this point are generated from metadata 316 * definitions in /system/media/camera/docs. Do not modify by hand or 317 * modify the comment blocks at the start or end. 318 *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~*/ 319 320 321 /** 322 * <p>The mode control selects how the image data is converted from the 323 * sensor's native color into linear sRGB color.</p> 324 * <p>When auto-white balance is enabled with {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, this 325 * control is overridden by the AWB routine. When AWB is disabled, the 326 * application controls how the color mapping is performed.</p> 327 * <p>We define the expected processing pipeline below. For consistency 328 * across devices, this is always the case with TRANSFORM_MATRIX.</p> 329 * <p>When either FULL or HIGH_QUALITY is used, the camera device may 330 * do additional processing but {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} and 331 * {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} will still be provided by the 332 * camera device (in the results) and be roughly correct.</p> 333 * <p>Switching to TRANSFORM_MATRIX and using the data provided from 334 * FAST or HIGH_QUALITY will yield a picture with the same white point 335 * as what was produced by the camera device in the earlier frame.</p> 336 * <p>The expected processing pipeline is as follows:</p> 337 * <p><img alt="White balance processing pipeline" src="../../../../images/camera2/metadata/android.colorCorrection.mode/processing_pipeline.png" /></p> 338 * <p>The white balance is encoded by two values, a 4-channel white-balance 339 * gain vector (applied in the Bayer domain), and a 3x3 color transform 340 * matrix (applied after demosaic).</p> 341 * <p>The 4-channel white-balance gains are defined as:</p> 342 * <pre><code>{@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} = [ R G_even G_odd B ] 343 * </code></pre> 344 * <p>where <code>G_even</code> is the gain for green pixels on even rows of the 345 * output, and <code>G_odd</code> is the gain for green pixels on the odd rows. 346 * These may be identical for a given camera device implementation; if 347 * the camera device does not support a separate gain for even/odd green 348 * channels, it will use the <code>G_even</code> value, and write <code>G_odd</code> equal to 349 * <code>G_even</code> in the output result metadata.</p> 350 * <p>The matrices for color transforms are defined as a 9-entry vector:</p> 351 * <pre><code>{@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} = [ I0 I1 I2 I3 I4 I5 I6 I7 I8 ] 352 * </code></pre> 353 * <p>which define a transform from input sensor colors, <code>P_in = [ r g b ]</code>, 354 * to output linear sRGB, <code>P_out = [ r' g' b' ]</code>,</p> 355 * <p>with colors as follows:</p> 356 * <pre><code>r' = I0r + I1g + I2b 357 * g' = I3r + I4g + I5b 358 * b' = I6r + I7g + I8b 359 * </code></pre> 360 * <p>Both the input and output value ranges must match. Overflow/underflow 361 * values are clipped to fit within the range.</p> 362 * 363 * @see CaptureRequest#COLOR_CORRECTION_GAINS 364 * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM 365 * @see CaptureRequest#CONTROL_AWB_MODE 366 * @see #COLOR_CORRECTION_MODE_TRANSFORM_MATRIX 367 * @see #COLOR_CORRECTION_MODE_FAST 368 * @see #COLOR_CORRECTION_MODE_HIGH_QUALITY 369 */ 370 public static final Key<Integer> COLOR_CORRECTION_MODE = 371 new Key<Integer>("android.colorCorrection.mode", int.class); 372 373 /** 374 * <p>A color transform matrix to use to transform 375 * from sensor RGB color space to output linear sRGB color space</p> 376 * <p>This matrix is either set by the camera device when the request 377 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is not TRANSFORM_MATRIX, or 378 * directly by the application in the request when the 379 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is TRANSFORM_MATRIX.</p> 380 * <p>In the latter case, the camera device may round the matrix to account 381 * for precision issues; the final rounded matrix should be reported back 382 * in this matrix result metadata. The transform should keep the magnitude 383 * of the output color values within <code>[0, 1.0]</code> (assuming input color 384 * values is within the normalized range <code>[0, 1.0]</code>), or clipping may occur.</p> 385 * 386 * @see CaptureRequest#COLOR_CORRECTION_MODE 387 */ 388 public static final Key<Rational[]> COLOR_CORRECTION_TRANSFORM = 389 new Key<Rational[]>("android.colorCorrection.transform", Rational[].class); 390 391 /** 392 * <p>Gains applying to Bayer raw color channels for 393 * white-balance</p> 394 * <p>The 4-channel white-balance gains are defined in 395 * the order of <code>[R G_even G_odd B]</code>, where <code>G_even</code> is the gain 396 * for green pixels on even rows of the output, and <code>G_odd</code> 397 * is the gain for green pixels on the odd rows. if a HAL 398 * does not support a separate gain for even/odd green channels, 399 * it should use the <code>G_even</code> value, and write <code>G_odd</code> equal to 400 * <code>G_even</code> in the output result metadata.</p> 401 * <p>This array is either set by HAL when the request 402 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is not TRANSFORM_MATRIX, or 403 * directly by the application in the request when the 404 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is TRANSFORM_MATRIX.</p> 405 * <p>The output should be the gains actually applied by the HAL to 406 * the current frame.</p> 407 * 408 * @see CaptureRequest#COLOR_CORRECTION_MODE 409 */ 410 public static final Key<float[]> COLOR_CORRECTION_GAINS = 411 new Key<float[]>("android.colorCorrection.gains", float[].class); 412 413 /** 414 * <p>The desired setting for the camera device's auto-exposure 415 * algorithm's antibanding compensation.</p> 416 * <p>Some kinds of lighting fixtures, such as some fluorescent 417 * lights, flicker at the rate of the power supply frequency 418 * (60Hz or 50Hz, depending on country). While this is 419 * typically not noticeable to a person, it can be visible to 420 * a camera device. If a camera sets its exposure time to the 421 * wrong value, the flicker may become visible in the 422 * viewfinder as flicker or in a final captured image, as a 423 * set of variable-brightness bands across the image.</p> 424 * <p>Therefore, the auto-exposure routines of camera devices 425 * include antibanding routines that ensure that the chosen 426 * exposure value will not cause such banding. The choice of 427 * exposure time depends on the rate of flicker, which the 428 * camera device can detect automatically, or the expected 429 * rate can be selected by the application using this 430 * control.</p> 431 * <p>A given camera device may not support all of the possible 432 * options for the antibanding mode. The 433 * {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_ANTIBANDING_MODES android.control.aeAvailableAntibandingModes} key contains 434 * the available modes for a given camera device.</p> 435 * <p>The default mode is AUTO, which must be supported by all 436 * camera devices.</p> 437 * <p>If manual exposure control is enabled (by setting 438 * {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} or {@link CaptureRequest#CONTROL_MODE android.control.mode} to OFF), 439 * then this setting has no effect, and the application must 440 * ensure it selects exposure times that do not cause banding 441 * issues. The {@link CaptureResult#STATISTICS_SCENE_FLICKER android.statistics.sceneFlicker} key can assist 442 * the application in this.</p> 443 * 444 * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_ANTIBANDING_MODES 445 * @see CaptureRequest#CONTROL_AE_MODE 446 * @see CaptureRequest#CONTROL_MODE 447 * @see CaptureResult#STATISTICS_SCENE_FLICKER 448 * @see #CONTROL_AE_ANTIBANDING_MODE_OFF 449 * @see #CONTROL_AE_ANTIBANDING_MODE_50HZ 450 * @see #CONTROL_AE_ANTIBANDING_MODE_60HZ 451 * @see #CONTROL_AE_ANTIBANDING_MODE_AUTO 452 */ 453 public static final Key<Integer> CONTROL_AE_ANTIBANDING_MODE = 454 new Key<Integer>("android.control.aeAntibandingMode", int.class); 455 456 /** 457 * <p>Adjustment to AE target image 458 * brightness</p> 459 * <p>For example, if EV step is 0.333, '6' will mean an 460 * exposure compensation of +2 EV; -3 will mean an exposure 461 * compensation of -1</p> 462 */ 463 public static final Key<Integer> CONTROL_AE_EXPOSURE_COMPENSATION = 464 new Key<Integer>("android.control.aeExposureCompensation", int.class); 465 466 /** 467 * <p>Whether AE is currently locked to its latest 468 * calculated values.</p> 469 * <p>Note that even when AE is locked, the flash may be 470 * fired if the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is ON_AUTO_FLASH / ON_ALWAYS_FLASH / 471 * ON_AUTO_FLASH_REDEYE.</p> 472 * <p>If AE precapture is triggered (see {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) 473 * when AE is already locked, the camera device will not change the exposure time 474 * ({@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}) and sensitivity ({@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}) 475 * parameters. The flash may be fired if the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} 476 * is ON_AUTO_FLASH/ON_AUTO_FLASH_REDEYE and the scene is too dark. If the 477 * {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is ON_ALWAYS_FLASH, the scene may become overexposed.</p> 478 * <p>See {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} for AE lock related state transition details.</p> 479 * 480 * @see CaptureRequest#CONTROL_AE_MODE 481 * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER 482 * @see CaptureResult#CONTROL_AE_STATE 483 * @see CaptureRequest#SENSOR_EXPOSURE_TIME 484 * @see CaptureRequest#SENSOR_SENSITIVITY 485 */ 486 public static final Key<Boolean> CONTROL_AE_LOCK = 487 new Key<Boolean>("android.control.aeLock", boolean.class); 488 489 /** 490 * <p>The desired mode for the camera device's 491 * auto-exposure routine.</p> 492 * <p>This control is only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} is 493 * AUTO.</p> 494 * <p>When set to any of the ON modes, the camera device's 495 * auto-exposure routine is enabled, overriding the 496 * application's selected exposure time, sensor sensitivity, 497 * and frame duration ({@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}, 498 * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and 499 * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}). If one of the FLASH modes 500 * is selected, the camera device's flash unit controls are 501 * also overridden.</p> 502 * <p>The FLASH modes are only available if the camera device 503 * has a flash unit ({@link CameraCharacteristics#FLASH_INFO_AVAILABLE android.flash.info.available} is <code>true</code>).</p> 504 * <p>If flash TORCH mode is desired, this field must be set to 505 * ON or OFF, and {@link CaptureRequest#FLASH_MODE android.flash.mode} set to TORCH.</p> 506 * <p>When set to any of the ON modes, the values chosen by the 507 * camera device auto-exposure routine for the overridden 508 * fields for a given capture will be available in its 509 * CaptureResult.</p> 510 * 511 * @see CaptureRequest#CONTROL_MODE 512 * @see CameraCharacteristics#FLASH_INFO_AVAILABLE 513 * @see CaptureRequest#FLASH_MODE 514 * @see CaptureRequest#SENSOR_EXPOSURE_TIME 515 * @see CaptureRequest#SENSOR_FRAME_DURATION 516 * @see CaptureRequest#SENSOR_SENSITIVITY 517 * @see #CONTROL_AE_MODE_OFF 518 * @see #CONTROL_AE_MODE_ON 519 * @see #CONTROL_AE_MODE_ON_AUTO_FLASH 520 * @see #CONTROL_AE_MODE_ON_ALWAYS_FLASH 521 * @see #CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE 522 */ 523 public static final Key<Integer> CONTROL_AE_MODE = 524 new Key<Integer>("android.control.aeMode", int.class); 525 526 /** 527 * <p>List of areas to use for 528 * metering.</p> 529 * <p>Each area is a rectangle plus weight: xmin, ymin, 530 * xmax, ymax, weight. The rectangle is defined to be inclusive of the 531 * specified coordinates.</p> 532 * <p>The coordinate system is based on the active pixel array, 533 * with (0,0) being the top-left pixel in the active pixel array, and 534 * ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1, 535 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the 536 * bottom-right pixel in the active pixel array. The weight 537 * should be nonnegative.</p> 538 * <p>If all regions have 0 weight, then no specific metering area 539 * needs to be used by the HAL. If the metering region is 540 * outside the current {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}, the HAL 541 * should ignore the sections outside the region and output the 542 * used sections in the frame metadata.</p> 543 * 544 * @see CaptureRequest#SCALER_CROP_REGION 545 * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE 546 */ 547 public static final Key<int[]> CONTROL_AE_REGIONS = 548 new Key<int[]>("android.control.aeRegions", int[].class); 549 550 /** 551 * <p>Range over which fps can be adjusted to 552 * maintain exposure</p> 553 * <p>Only constrains AE algorithm, not manual control 554 * of {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</p> 555 * 556 * @see CaptureRequest#SENSOR_EXPOSURE_TIME 557 */ 558 public static final Key<int[]> CONTROL_AE_TARGET_FPS_RANGE = 559 new Key<int[]>("android.control.aeTargetFpsRange", int[].class); 560 561 /** 562 * <p>Whether the camera device will trigger a precapture 563 * metering sequence when it processes this request.</p> 564 * <p>This entry is normally set to IDLE, or is not 565 * included at all in the request settings. When included and 566 * set to START, the camera device will trigger the autoexposure 567 * precapture metering sequence.</p> 568 * <p>The effect of AE precapture trigger depends on the current 569 * AE mode and state; see {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} for AE precapture 570 * state transition details.</p> 571 * 572 * @see CaptureResult#CONTROL_AE_STATE 573 * @see #CONTROL_AE_PRECAPTURE_TRIGGER_IDLE 574 * @see #CONTROL_AE_PRECAPTURE_TRIGGER_START 575 */ 576 public static final Key<Integer> CONTROL_AE_PRECAPTURE_TRIGGER = 577 new Key<Integer>("android.control.aePrecaptureTrigger", int.class); 578 579 /** 580 * <p>Whether AF is currently enabled, and what 581 * mode it is set to</p> 582 * <p>Only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} = AUTO.</p> 583 * <p>If the lens is controlled by the camera device auto-focus algorithm, 584 * the camera device will report the current AF status in {@link CaptureResult#CONTROL_AF_STATE android.control.afState} 585 * in result metadata.</p> 586 * 587 * @see CaptureResult#CONTROL_AF_STATE 588 * @see CaptureRequest#CONTROL_MODE 589 * @see #CONTROL_AF_MODE_OFF 590 * @see #CONTROL_AF_MODE_AUTO 591 * @see #CONTROL_AF_MODE_MACRO 592 * @see #CONTROL_AF_MODE_CONTINUOUS_VIDEO 593 * @see #CONTROL_AF_MODE_CONTINUOUS_PICTURE 594 * @see #CONTROL_AF_MODE_EDOF 595 */ 596 public static final Key<Integer> CONTROL_AF_MODE = 597 new Key<Integer>("android.control.afMode", int.class); 598 599 /** 600 * <p>List of areas to use for focus 601 * estimation.</p> 602 * <p>Each area is a rectangle plus weight: xmin, ymin, 603 * xmax, ymax, weight. The rectangle is defined to be inclusive of the 604 * specified coordinates.</p> 605 * <p>The coordinate system is based on the active pixel array, 606 * with (0,0) being the top-left pixel in the active pixel array, and 607 * ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1, 608 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the 609 * bottom-right pixel in the active pixel array. The weight 610 * should be nonnegative.</p> 611 * <p>If all regions have 0 weight, then no specific focus area 612 * needs to be used by the HAL. If the focusing region is 613 * outside the current {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}, the HAL 614 * should ignore the sections outside the region and output the 615 * used sections in the frame metadata.</p> 616 * 617 * @see CaptureRequest#SCALER_CROP_REGION 618 * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE 619 */ 620 public static final Key<int[]> CONTROL_AF_REGIONS = 621 new Key<int[]>("android.control.afRegions", int[].class); 622 623 /** 624 * <p>Whether the camera device will trigger autofocus for this request.</p> 625 * <p>This entry is normally set to IDLE, or is not 626 * included at all in the request settings.</p> 627 * <p>When included and set to START, the camera device will trigger the 628 * autofocus algorithm. If autofocus is disabled, this trigger has no effect.</p> 629 * <p>When set to CANCEL, the camera device will cancel any active trigger, 630 * and return to its initial AF state.</p> 631 * <p>See {@link CaptureResult#CONTROL_AF_STATE android.control.afState} for what that means for each AF mode.</p> 632 * 633 * @see CaptureResult#CONTROL_AF_STATE 634 * @see #CONTROL_AF_TRIGGER_IDLE 635 * @see #CONTROL_AF_TRIGGER_START 636 * @see #CONTROL_AF_TRIGGER_CANCEL 637 */ 638 public static final Key<Integer> CONTROL_AF_TRIGGER = 639 new Key<Integer>("android.control.afTrigger", int.class); 640 641 /** 642 * <p>Whether AWB is currently locked to its 643 * latest calculated values.</p> 644 * <p>Note that AWB lock is only meaningful for AUTO 645 * mode; in other modes, AWB is already fixed to a specific 646 * setting.</p> 647 */ 648 public static final Key<Boolean> CONTROL_AWB_LOCK = 649 new Key<Boolean>("android.control.awbLock", boolean.class); 650 651 /** 652 * <p>Whether AWB is currently setting the color 653 * transform fields, and what its illumination target 654 * is</p> 655 * <p>This control is only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} is AUTO.</p> 656 * <p>When set to the ON mode, the camera device's auto white balance 657 * routine is enabled, overriding the application's selected 658 * {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}, {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} and 659 * {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode}.</p> 660 * <p>When set to the OFF mode, the camera device's auto white balance 661 * routine is disabled. The applicantion manually controls the white 662 * balance by {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}, {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} 663 * and {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode}.</p> 664 * <p>When set to any other modes, the camera device's auto white balance 665 * routine is disabled. The camera device uses each particular illumination 666 * target for white balance adjustment.</p> 667 * 668 * @see CaptureRequest#COLOR_CORRECTION_GAINS 669 * @see CaptureRequest#COLOR_CORRECTION_MODE 670 * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM 671 * @see CaptureRequest#CONTROL_MODE 672 * @see #CONTROL_AWB_MODE_OFF 673 * @see #CONTROL_AWB_MODE_AUTO 674 * @see #CONTROL_AWB_MODE_INCANDESCENT 675 * @see #CONTROL_AWB_MODE_FLUORESCENT 676 * @see #CONTROL_AWB_MODE_WARM_FLUORESCENT 677 * @see #CONTROL_AWB_MODE_DAYLIGHT 678 * @see #CONTROL_AWB_MODE_CLOUDY_DAYLIGHT 679 * @see #CONTROL_AWB_MODE_TWILIGHT 680 * @see #CONTROL_AWB_MODE_SHADE 681 */ 682 public static final Key<Integer> CONTROL_AWB_MODE = 683 new Key<Integer>("android.control.awbMode", int.class); 684 685 /** 686 * <p>List of areas to use for illuminant 687 * estimation.</p> 688 * <p>Only used in AUTO mode.</p> 689 * <p>Each area is a rectangle plus weight: xmin, ymin, 690 * xmax, ymax, weight. The rectangle is defined to be inclusive of the 691 * specified coordinates.</p> 692 * <p>The coordinate system is based on the active pixel array, 693 * with (0,0) being the top-left pixel in the active pixel array, and 694 * ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1, 695 * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the 696 * bottom-right pixel in the active pixel array. The weight 697 * should be nonnegative.</p> 698 * <p>If all regions have 0 weight, then no specific metering area 699 * needs to be used by the HAL. If the metering region is 700 * outside the current {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}, the HAL 701 * should ignore the sections outside the region and output the 702 * used sections in the frame metadata.</p> 703 * 704 * @see CaptureRequest#SCALER_CROP_REGION 705 * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE 706 */ 707 public static final Key<int[]> CONTROL_AWB_REGIONS = 708 new Key<int[]>("android.control.awbRegions", int[].class); 709 710 /** 711 * <p>Information to the camera device 3A (auto-exposure, 712 * auto-focus, auto-white balance) routines about the purpose 713 * of this capture, to help the camera device to decide optimal 3A 714 * strategy.</p> 715 * <p>This control is only effective if <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} != OFF</code> 716 * and any 3A routine is active.</p> 717 * 718 * @see CaptureRequest#CONTROL_MODE 719 * @see #CONTROL_CAPTURE_INTENT_CUSTOM 720 * @see #CONTROL_CAPTURE_INTENT_PREVIEW 721 * @see #CONTROL_CAPTURE_INTENT_STILL_CAPTURE 722 * @see #CONTROL_CAPTURE_INTENT_VIDEO_RECORD 723 * @see #CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT 724 * @see #CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG 725 */ 726 public static final Key<Integer> CONTROL_CAPTURE_INTENT = 727 new Key<Integer>("android.control.captureIntent", int.class); 728 729 /** 730 * <p>A special color effect to apply.</p> 731 * <p>When this mode is set, a color effect will be applied 732 * to images produced by the camera device. The interpretation 733 * and implementation of these color effects is left to the 734 * implementor of the camera device, and should not be 735 * depended on to be consistent (or present) across all 736 * devices.</p> 737 * <p>A color effect will only be applied if 738 * {@link CaptureRequest#CONTROL_MODE android.control.mode} != OFF.</p> 739 * 740 * @see CaptureRequest#CONTROL_MODE 741 * @see #CONTROL_EFFECT_MODE_OFF 742 * @see #CONTROL_EFFECT_MODE_MONO 743 * @see #CONTROL_EFFECT_MODE_NEGATIVE 744 * @see #CONTROL_EFFECT_MODE_SOLARIZE 745 * @see #CONTROL_EFFECT_MODE_SEPIA 746 * @see #CONTROL_EFFECT_MODE_POSTERIZE 747 * @see #CONTROL_EFFECT_MODE_WHITEBOARD 748 * @see #CONTROL_EFFECT_MODE_BLACKBOARD 749 * @see #CONTROL_EFFECT_MODE_AQUA 750 */ 751 public static final Key<Integer> CONTROL_EFFECT_MODE = 752 new Key<Integer>("android.control.effectMode", int.class); 753 754 /** 755 * <p>Overall mode of 3A control 756 * routines</p> 757 * <p>High-level 3A control. When set to OFF, all 3A control 758 * by the camera device is disabled. The application must set the fields for 759 * capture parameters itself.</p> 760 * <p>When set to AUTO, the individual algorithm controls in 761 * android.control.* are in effect, such as {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}.</p> 762 * <p>When set to USE_SCENE_MODE, the individual controls in 763 * android.control.* are mostly disabled, and the camera device implements 764 * one of the scene mode settings (such as ACTION, SUNSET, or PARTY) 765 * as it wishes. The camera device scene mode 3A settings are provided by 766 * android.control.sceneModeOverrides.</p> 767 * <p>When set to OFF_KEEP_STATE, it is similar to OFF mode, the only difference 768 * is that this frame will not be used by camera device background 3A statistics 769 * update, as if this frame is never captured. This mode can be used in the scenario 770 * where the application doesn't want a 3A manual control capture to affect 771 * the subsequent auto 3A capture results.</p> 772 * 773 * @see CaptureRequest#CONTROL_AF_MODE 774 * @see #CONTROL_MODE_OFF 775 * @see #CONTROL_MODE_AUTO 776 * @see #CONTROL_MODE_USE_SCENE_MODE 777 * @see #CONTROL_MODE_OFF_KEEP_STATE 778 */ 779 public static final Key<Integer> CONTROL_MODE = 780 new Key<Integer>("android.control.mode", int.class); 781 782 /** 783 * <p>A camera mode optimized for conditions typical in a particular 784 * capture setting.</p> 785 * <p>This is the mode that that is active when 786 * <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} == USE_SCENE_MODE</code>. Aside from FACE_PRIORITY, 787 * these modes will disable {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}, 788 * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode} while in use.</p> 789 * <p>The interpretation and implementation of these scene modes is left 790 * to the implementor of the camera device. Their behavior will not be 791 * consistent across all devices, and any given device may only implement 792 * a subset of these modes.</p> 793 * 794 * @see CaptureRequest#CONTROL_AE_MODE 795 * @see CaptureRequest#CONTROL_AF_MODE 796 * @see CaptureRequest#CONTROL_AWB_MODE 797 * @see CaptureRequest#CONTROL_MODE 798 * @see #CONTROL_SCENE_MODE_DISABLED 799 * @see #CONTROL_SCENE_MODE_FACE_PRIORITY 800 * @see #CONTROL_SCENE_MODE_ACTION 801 * @see #CONTROL_SCENE_MODE_PORTRAIT 802 * @see #CONTROL_SCENE_MODE_LANDSCAPE 803 * @see #CONTROL_SCENE_MODE_NIGHT 804 * @see #CONTROL_SCENE_MODE_NIGHT_PORTRAIT 805 * @see #CONTROL_SCENE_MODE_THEATRE 806 * @see #CONTROL_SCENE_MODE_BEACH 807 * @see #CONTROL_SCENE_MODE_SNOW 808 * @see #CONTROL_SCENE_MODE_SUNSET 809 * @see #CONTROL_SCENE_MODE_STEADYPHOTO 810 * @see #CONTROL_SCENE_MODE_FIREWORKS 811 * @see #CONTROL_SCENE_MODE_SPORTS 812 * @see #CONTROL_SCENE_MODE_PARTY 813 * @see #CONTROL_SCENE_MODE_CANDLELIGHT 814 * @see #CONTROL_SCENE_MODE_BARCODE 815 */ 816 public static final Key<Integer> CONTROL_SCENE_MODE = 817 new Key<Integer>("android.control.sceneMode", int.class); 818 819 /** 820 * <p>Whether video stabilization is 821 * active</p> 822 * <p>If enabled, video stabilization can modify the 823 * {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} to keep the video stream 824 * stabilized</p> 825 * 826 * @see CaptureRequest#SCALER_CROP_REGION 827 */ 828 public static final Key<Boolean> CONTROL_VIDEO_STABILIZATION_MODE = 829 new Key<Boolean>("android.control.videoStabilizationMode", boolean.class); 830 831 /** 832 * <p>Operation mode for edge 833 * enhancement</p> 834 * <p>Edge/sharpness/detail enhancement. OFF means no 835 * enhancement will be applied by the HAL.</p> 836 * <p>FAST/HIGH_QUALITY both mean camera device determined enhancement 837 * will be applied. HIGH_QUALITY mode indicates that the 838 * camera device will use the highest-quality enhancement algorithms, 839 * even if it slows down capture rate. FAST means the camera device will 840 * not slow down capture rate when applying edge enhancement.</p> 841 * @see #EDGE_MODE_OFF 842 * @see #EDGE_MODE_FAST 843 * @see #EDGE_MODE_HIGH_QUALITY 844 */ 845 public static final Key<Integer> EDGE_MODE = 846 new Key<Integer>("android.edge.mode", int.class); 847 848 /** 849 * <p>The desired mode for for the camera device's flash control.</p> 850 * <p>This control is only effective when flash unit is available 851 * (<code>{@link CameraCharacteristics#FLASH_INFO_AVAILABLE android.flash.info.available} == true</code>).</p> 852 * <p>When this control is used, the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} must be set to ON or OFF. 853 * Otherwise, the camera device auto-exposure related flash control (ON_AUTO_FLASH, 854 * ON_ALWAYS_FLASH, or ON_AUTO_FLASH_REDEYE) will override this control.</p> 855 * <p>When set to OFF, the camera device will not fire flash for this capture.</p> 856 * <p>When set to SINGLE, the camera device will fire flash regardless of the camera 857 * device's auto-exposure routine's result. When used in still capture case, this 858 * control should be used along with AE precapture metering sequence 859 * ({@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}), otherwise, the image may be incorrectly exposed.</p> 860 * <p>When set to TORCH, the flash will be on continuously. This mode can be used 861 * for use cases such as preview, auto-focus assist, still capture, or video recording.</p> 862 * <p>The flash status will be reported by {@link CaptureResult#FLASH_STATE android.flash.state} in the capture result metadata.</p> 863 * 864 * @see CaptureRequest#CONTROL_AE_MODE 865 * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER 866 * @see CameraCharacteristics#FLASH_INFO_AVAILABLE 867 * @see CaptureResult#FLASH_STATE 868 * @see #FLASH_MODE_OFF 869 * @see #FLASH_MODE_SINGLE 870 * @see #FLASH_MODE_TORCH 871 */ 872 public static final Key<Integer> FLASH_MODE = 873 new Key<Integer>("android.flash.mode", int.class); 874 875 /** 876 * <p>Set operational mode for hot pixel correction.</p> 877 * <p>Hotpixel correction interpolates out, or otherwise removes, pixels 878 * that do not accurately encode the incoming light (i.e. pixels that 879 * are stuck at an arbitrary value).</p> 880 * @see #HOT_PIXEL_MODE_OFF 881 * @see #HOT_PIXEL_MODE_FAST 882 * @see #HOT_PIXEL_MODE_HIGH_QUALITY 883 */ 884 public static final Key<Integer> HOT_PIXEL_MODE = 885 new Key<Integer>("android.hotPixel.mode", int.class); 886 887 /** 888 * <p>GPS coordinates to include in output JPEG 889 * EXIF</p> 890 */ 891 public static final Key<double[]> JPEG_GPS_COORDINATES = 892 new Key<double[]>("android.jpeg.gpsCoordinates", double[].class); 893 894 /** 895 * <p>32 characters describing GPS algorithm to 896 * include in EXIF</p> 897 */ 898 public static final Key<String> JPEG_GPS_PROCESSING_METHOD = 899 new Key<String>("android.jpeg.gpsProcessingMethod", String.class); 900 901 /** 902 * <p>Time GPS fix was made to include in 903 * EXIF</p> 904 */ 905 public static final Key<Long> JPEG_GPS_TIMESTAMP = 906 new Key<Long>("android.jpeg.gpsTimestamp", long.class); 907 908 /** 909 * <p>Orientation of JPEG image to 910 * write</p> 911 */ 912 public static final Key<Integer> JPEG_ORIENTATION = 913 new Key<Integer>("android.jpeg.orientation", int.class); 914 915 /** 916 * <p>Compression quality of the final JPEG 917 * image</p> 918 * <p>85-95 is typical usage range</p> 919 */ 920 public static final Key<Byte> JPEG_QUALITY = 921 new Key<Byte>("android.jpeg.quality", byte.class); 922 923 /** 924 * <p>Compression quality of JPEG 925 * thumbnail</p> 926 */ 927 public static final Key<Byte> JPEG_THUMBNAIL_QUALITY = 928 new Key<Byte>("android.jpeg.thumbnailQuality", byte.class); 929 930 /** 931 * <p>Resolution of embedded JPEG thumbnail</p> 932 * <p>When set to (0, 0) value, the JPEG EXIF will not contain thumbnail, 933 * but the captured JPEG will still be a valid image.</p> 934 * <p>When a jpeg image capture is issued, the thumbnail size selected should have 935 * the same aspect ratio as the jpeg image.</p> 936 */ 937 public static final Key<android.hardware.camera2.Size> JPEG_THUMBNAIL_SIZE = 938 new Key<android.hardware.camera2.Size>("android.jpeg.thumbnailSize", android.hardware.camera2.Size.class); 939 940 /** 941 * <p>The ratio of lens focal length to the effective 942 * aperture diameter.</p> 943 * <p>This will only be supported on the camera devices that 944 * have variable aperture lens. The aperture value can only be 945 * one of the values listed in {@link CameraCharacteristics#LENS_INFO_AVAILABLE_APERTURES android.lens.info.availableApertures}.</p> 946 * <p>When this is supported and {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is OFF, 947 * this can be set along with {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}, 948 * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} 949 * to achieve manual exposure control.</p> 950 * <p>The requested aperture value may take several frames to reach the 951 * requested value; the camera device will report the current (intermediate) 952 * aperture size in capture result metadata while the aperture is changing. 953 * While the aperture is still changing, {@link CaptureResult#LENS_STATE android.lens.state} will be set to MOVING.</p> 954 * <p>When this is supported and {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is one of 955 * the ON modes, this will be overridden by the camera device 956 * auto-exposure algorithm, the overridden values are then provided 957 * back to the user in the corresponding result.</p> 958 * 959 * @see CaptureRequest#CONTROL_AE_MODE 960 * @see CameraCharacteristics#LENS_INFO_AVAILABLE_APERTURES 961 * @see CaptureResult#LENS_STATE 962 * @see CaptureRequest#SENSOR_EXPOSURE_TIME 963 * @see CaptureRequest#SENSOR_FRAME_DURATION 964 * @see CaptureRequest#SENSOR_SENSITIVITY 965 */ 966 public static final Key<Float> LENS_APERTURE = 967 new Key<Float>("android.lens.aperture", float.class); 968 969 /** 970 * <p>State of lens neutral density filter(s).</p> 971 * <p>This will not be supported on most camera devices. On devices 972 * where this is supported, this may only be set to one of the 973 * values included in {@link CameraCharacteristics#LENS_INFO_AVAILABLE_FILTER_DENSITIES android.lens.info.availableFilterDensities}.</p> 974 * <p>Lens filters are typically used to lower the amount of light the 975 * sensor is exposed to (measured in steps of EV). As used here, an EV 976 * step is the standard logarithmic representation, which are 977 * non-negative, and inversely proportional to the amount of light 978 * hitting the sensor. For example, setting this to 0 would result 979 * in no reduction of the incoming light, and setting this to 2 would 980 * mean that the filter is set to reduce incoming light by two stops 981 * (allowing 1/4 of the prior amount of light to the sensor).</p> 982 * <p>It may take several frames before the lens filter density changes 983 * to the requested value. While the filter density is still changing, 984 * {@link CaptureResult#LENS_STATE android.lens.state} will be set to MOVING.</p> 985 * 986 * @see CameraCharacteristics#LENS_INFO_AVAILABLE_FILTER_DENSITIES 987 * @see CaptureResult#LENS_STATE 988 */ 989 public static final Key<Float> LENS_FILTER_DENSITY = 990 new Key<Float>("android.lens.filterDensity", float.class); 991 992 /** 993 * <p>The current lens focal length; used for optical zoom.</p> 994 * <p>This setting controls the physical focal length of the camera 995 * device's lens. Changing the focal length changes the field of 996 * view of the camera device, and is usually used for optical zoom.</p> 997 * <p>Like {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} and {@link CaptureRequest#LENS_APERTURE android.lens.aperture}, this 998 * setting won't be applied instantaneously, and it may take several 999 * frames before the lens can change to the requested focal length. 1000 * While the focal length is still changing, {@link CaptureResult#LENS_STATE android.lens.state} will 1001 * be set to MOVING.</p> 1002 * <p>This is expected not to be supported on most devices.</p> 1003 * 1004 * @see CaptureRequest#LENS_APERTURE 1005 * @see CaptureRequest#LENS_FOCUS_DISTANCE 1006 * @see CaptureResult#LENS_STATE 1007 */ 1008 public static final Key<Float> LENS_FOCAL_LENGTH = 1009 new Key<Float>("android.lens.focalLength", float.class); 1010 1011 /** 1012 * <p>Distance to plane of sharpest focus, 1013 * measured from frontmost surface of the lens</p> 1014 * <p>0 means infinity focus. Used value will be clamped 1015 * to [0, {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}].</p> 1016 * <p>Like {@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, this setting won't be applied 1017 * instantaneously, and it may take several frames before the lens 1018 * can move to the requested focus distance. While the lens is still moving, 1019 * {@link CaptureResult#LENS_STATE android.lens.state} will be set to MOVING.</p> 1020 * 1021 * @see CaptureRequest#LENS_FOCAL_LENGTH 1022 * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE 1023 * @see CaptureResult#LENS_STATE 1024 */ 1025 public static final Key<Float> LENS_FOCUS_DISTANCE = 1026 new Key<Float>("android.lens.focusDistance", float.class); 1027 1028 /** 1029 * <p>Sets whether the camera device uses optical image stabilization (OIS) 1030 * when capturing images.</p> 1031 * <p>OIS is used to compensate for motion blur due to small movements of 1032 * the camera during capture. Unlike digital image stabilization, OIS makes 1033 * use of mechanical elements to stabilize the camera sensor, and thus 1034 * allows for longer exposure times before camera shake becomes 1035 * apparent.</p> 1036 * <p>This is not expected to be supported on most devices.</p> 1037 * @see #LENS_OPTICAL_STABILIZATION_MODE_OFF 1038 * @see #LENS_OPTICAL_STABILIZATION_MODE_ON 1039 */ 1040 public static final Key<Integer> LENS_OPTICAL_STABILIZATION_MODE = 1041 new Key<Integer>("android.lens.opticalStabilizationMode", int.class); 1042 1043 /** 1044 * <p>Mode of operation for the noise reduction 1045 * algorithm</p> 1046 * <p>Noise filtering control. OFF means no noise reduction 1047 * will be applied by the HAL.</p> 1048 * <p>FAST/HIGH_QUALITY both mean camera device determined noise filtering 1049 * will be applied. HIGH_QUALITY mode indicates that the camera device 1050 * will use the highest-quality noise filtering algorithms, 1051 * even if it slows down capture rate. FAST means the camera device should not 1052 * slow down capture rate when applying noise filtering.</p> 1053 * @see #NOISE_REDUCTION_MODE_OFF 1054 * @see #NOISE_REDUCTION_MODE_FAST 1055 * @see #NOISE_REDUCTION_MODE_HIGH_QUALITY 1056 */ 1057 public static final Key<Integer> NOISE_REDUCTION_MODE = 1058 new Key<Integer>("android.noiseReduction.mode", int.class); 1059 1060 /** 1061 * <p>An application-specified ID for the current 1062 * request. Must be maintained unchanged in output 1063 * frame</p> 1064 * @hide 1065 */ 1066 public static final Key<Integer> REQUEST_ID = 1067 new Key<Integer>("android.request.id", int.class); 1068 1069 /** 1070 * <p>(x, y, width, height).</p> 1071 * <p>A rectangle with the top-level corner of (x,y) and size 1072 * (width, height). The region of the sensor that is used for 1073 * output. Each stream must use this rectangle to produce its 1074 * output, cropping to a smaller region if necessary to 1075 * maintain the stream's aspect ratio.</p> 1076 * <p>HAL2.x uses only (x, y, width)</p> 1077 * <p>Any additional per-stream cropping must be done to 1078 * maximize the final pixel area of the stream.</p> 1079 * <p>For example, if the crop region is set to a 4:3 aspect 1080 * ratio, then 4:3 streams should use the exact crop 1081 * region. 16:9 streams should further crop vertically 1082 * (letterbox).</p> 1083 * <p>Conversely, if the crop region is set to a 16:9, then 4:3 1084 * outputs should crop horizontally (pillarbox), and 16:9 1085 * streams should match exactly. These additional crops must 1086 * be centered within the crop region.</p> 1087 * <p>The output streams must maintain square pixels at all 1088 * times, no matter what the relative aspect ratios of the 1089 * crop region and the stream are. Negative values for 1090 * corner are allowed for raw output if full pixel array is 1091 * larger than active pixel array. Width and height may be 1092 * rounded to nearest larger supportable width, especially 1093 * for raw output, where only a few fixed scales may be 1094 * possible. The width and height of the crop region cannot 1095 * be set to be smaller than floor( activeArraySize.width / 1096 * {@link CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM android.scaler.availableMaxDigitalZoom} ) and floor( 1097 * activeArraySize.height / 1098 * {@link CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM android.scaler.availableMaxDigitalZoom}), respectively.</p> 1099 * 1100 * @see CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM 1101 */ 1102 public static final Key<android.graphics.Rect> SCALER_CROP_REGION = 1103 new Key<android.graphics.Rect>("android.scaler.cropRegion", android.graphics.Rect.class); 1104 1105 /** 1106 * <p>Duration each pixel is exposed to 1107 * light.</p> 1108 * <p>If the sensor can't expose this exact duration, it should shorten the 1109 * duration exposed to the nearest possible value (rather than expose longer).</p> 1110 * <p>1/10000 - 30 sec range. No bulb mode</p> 1111 */ 1112 public static final Key<Long> SENSOR_EXPOSURE_TIME = 1113 new Key<Long>("android.sensor.exposureTime", long.class); 1114 1115 /** 1116 * <p>Duration from start of frame exposure to 1117 * start of next frame exposure.</p> 1118 * <p>The maximum frame rate that can be supported by a camera subsystem is 1119 * a function of many factors:</p> 1120 * <ul> 1121 * <li>Requested resolutions of output image streams</li> 1122 * <li>Availability of binning / skipping modes on the imager</li> 1123 * <li>The bandwidth of the imager interface</li> 1124 * <li>The bandwidth of the various ISP processing blocks</li> 1125 * </ul> 1126 * <p>Since these factors can vary greatly between different ISPs and 1127 * sensors, the camera abstraction tries to represent the bandwidth 1128 * restrictions with as simple a model as possible.</p> 1129 * <p>The model presented has the following characteristics:</p> 1130 * <ul> 1131 * <li>The image sensor is always configured to output the smallest 1132 * resolution possible given the application's requested output stream 1133 * sizes. The smallest resolution is defined as being at least as large 1134 * as the largest requested output stream size; the camera pipeline must 1135 * never digitally upsample sensor data when the crop region covers the 1136 * whole sensor. In general, this means that if only small output stream 1137 * resolutions are configured, the sensor can provide a higher frame 1138 * rate.</li> 1139 * <li>Since any request may use any or all the currently configured 1140 * output streams, the sensor and ISP must be configured to support 1141 * scaling a single capture to all the streams at the same time. This 1142 * means the camera pipeline must be ready to produce the largest 1143 * requested output size without any delay. Therefore, the overall 1144 * frame rate of a given configured stream set is governed only by the 1145 * largest requested stream resolution.</li> 1146 * <li>Using more than one output stream in a request does not affect the 1147 * frame duration.</li> 1148 * <li>Certain format-streams may need to do additional background processing 1149 * before data is consumed/produced by that stream. These processors 1150 * can run concurrently to the rest of the camera pipeline, but 1151 * cannot process more than 1 capture at a time.</li> 1152 * </ul> 1153 * <p>The necessary information for the application, given the model above, 1154 * is provided via the {@link CameraCharacteristics#SCALER_AVAILABLE_MIN_FRAME_DURATIONS android.scaler.availableMinFrameDurations} field. 1155 * These are used to determine the maximum frame rate / minimum frame 1156 * duration that is possible for a given stream configuration.</p> 1157 * <p>Specifically, the application can use the following rules to 1158 * determine the minimum frame duration it can request from the camera 1159 * device:</p> 1160 * <ol> 1161 * <li>Let the set of currently configured input/output streams 1162 * be called <code>S</code>.</li> 1163 * <li>Find the minimum frame durations for each stream in <code>S</code>, by 1164 * looking it up in {@link CameraCharacteristics#SCALER_AVAILABLE_MIN_FRAME_DURATIONS android.scaler.availableMinFrameDurations} (with 1165 * its respective size/format). Let this set of frame durations be called 1166 * <code>F</code>.</li> 1167 * <li>For any given request <code>R</code>, the minimum frame duration allowed 1168 * for <code>R</code> is the maximum out of all values in <code>F</code>. Let the streams 1169 * used in <code>R</code> be called <code>S_r</code>.</li> 1170 * </ol> 1171 * <p>If none of the streams in <code>S_r</code> have a stall time (listed in 1172 * {@link CameraCharacteristics#SCALER_AVAILABLE_STALL_DURATIONS android.scaler.availableStallDurations}), then the frame duration in 1173 * <code>F</code> determines the steady state frame rate that the application will 1174 * get if it uses <code>R</code> as a repeating request. Let this special kind 1175 * of request be called <code>Rsimple</code>.</p> 1176 * <p>A repeating request <code>Rsimple</code> can be <em>occasionally</em> interleaved 1177 * by a single capture of a new request <code>Rstall</code> (which has at least 1178 * one in-use stream with a non-0 stall time) and if <code>Rstall</code> has the 1179 * same minimum frame duration this will not cause a frame rate loss 1180 * if all buffers from the previous <code>Rstall</code> have already been 1181 * delivered.</p> 1182 * <p>For more details about stalling, see 1183 * {@link CameraCharacteristics#SCALER_AVAILABLE_STALL_DURATIONS android.scaler.availableStallDurations}.</p> 1184 * 1185 * @see CameraCharacteristics#SCALER_AVAILABLE_MIN_FRAME_DURATIONS 1186 * @see CameraCharacteristics#SCALER_AVAILABLE_STALL_DURATIONS 1187 */ 1188 public static final Key<Long> SENSOR_FRAME_DURATION = 1189 new Key<Long>("android.sensor.frameDuration", long.class); 1190 1191 /** 1192 * <p>Gain applied to image data. Must be 1193 * implemented through analog gain only if set to values 1194 * below 'maximum analog sensitivity'.</p> 1195 * <p>If the sensor can't apply this exact gain, it should lessen the 1196 * gain to the nearest possible value (rather than gain more).</p> 1197 * <p>ISO 12232:2006 REI method</p> 1198 */ 1199 public static final Key<Integer> SENSOR_SENSITIVITY = 1200 new Key<Integer>("android.sensor.sensitivity", int.class); 1201 1202 /** 1203 * <p>A pixel <code>[R, G_even, G_odd, B]</code> that supplies the test pattern 1204 * when {@link CaptureRequest#SENSOR_TEST_PATTERN_MODE android.sensor.testPatternMode} is SOLID_COLOR.</p> 1205 * <p>Each color channel is treated as an unsigned 32-bit integer. 1206 * The camera device then uses the most significant X bits 1207 * that correspond to how many bits are in its Bayer raw sensor 1208 * output.</p> 1209 * <p>For example, a sensor with RAW10 Bayer output would use the 1210 * 10 most significant bits from each color channel.</p> 1211 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p> 1212 * 1213 * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE 1214 */ 1215 public static final Key<int[]> SENSOR_TEST_PATTERN_DATA = 1216 new Key<int[]>("android.sensor.testPatternData", int[].class); 1217 1218 /** 1219 * <p>When enabled, the sensor sends a test pattern instead of 1220 * doing a real exposure from the camera.</p> 1221 * <p>When a test pattern is enabled, all manual sensor controls specified 1222 * by android.sensor.* should be ignored. All other controls should 1223 * work as normal.</p> 1224 * <p>For example, if manual flash is enabled, flash firing should still 1225 * occur (and that the test pattern remain unmodified, since the flash 1226 * would not actually affect it).</p> 1227 * <p><b>Optional</b> - This value may be {@code null} on some devices.</p> 1228 * @see #SENSOR_TEST_PATTERN_MODE_OFF 1229 * @see #SENSOR_TEST_PATTERN_MODE_SOLID_COLOR 1230 * @see #SENSOR_TEST_PATTERN_MODE_COLOR_BARS 1231 * @see #SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY 1232 * @see #SENSOR_TEST_PATTERN_MODE_PN9 1233 * @see #SENSOR_TEST_PATTERN_MODE_CUSTOM1 1234 */ 1235 public static final Key<Integer> SENSOR_TEST_PATTERN_MODE = 1236 new Key<Integer>("android.sensor.testPatternMode", int.class); 1237 1238 /** 1239 * <p>Quality of lens shading correction applied 1240 * to the image data.</p> 1241 * <p>When set to OFF mode, no lens shading correction will be applied by the 1242 * camera device, and an identity lens shading map data will be provided 1243 * if <code>{@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode} == ON</code>. For example, for lens 1244 * shading map with size specified as <code>{@link CameraCharacteristics#LENS_INFO_SHADING_MAP_SIZE android.lens.info.shadingMapSize} = [ 4, 3 ]</code>, 1245 * the output {@link CaptureResult#STATISTICS_LENS_SHADING_MAP android.statistics.lensShadingMap} for this case will be an identity map 1246 * shown below:</p> 1247 * <pre><code>[ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1248 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1249 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1250 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1251 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1252 * 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 ] 1253 * </code></pre> 1254 * <p>When set to other modes, lens shading correction will be applied by the 1255 * camera device. Applications can request lens shading map data by setting 1256 * {@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode} to ON, and then the camera device will provide 1257 * lens shading map data in {@link CaptureResult#STATISTICS_LENS_SHADING_MAP android.statistics.lensShadingMap}, with size specified 1258 * by {@link CameraCharacteristics#LENS_INFO_SHADING_MAP_SIZE android.lens.info.shadingMapSize}.</p> 1259 * 1260 * @see CameraCharacteristics#LENS_INFO_SHADING_MAP_SIZE 1261 * @see CaptureResult#STATISTICS_LENS_SHADING_MAP 1262 * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE 1263 * @see #SHADING_MODE_OFF 1264 * @see #SHADING_MODE_FAST 1265 * @see #SHADING_MODE_HIGH_QUALITY 1266 * @hide 1267 */ 1268 public static final Key<Integer> SHADING_MODE = 1269 new Key<Integer>("android.shading.mode", int.class); 1270 1271 /** 1272 * <p>State of the face detector 1273 * unit</p> 1274 * <p>Whether face detection is enabled, and whether it 1275 * should output just the basic fields or the full set of 1276 * fields. Value must be one of the 1277 * {@link CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES android.statistics.info.availableFaceDetectModes}.</p> 1278 * 1279 * @see CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES 1280 * @see #STATISTICS_FACE_DETECT_MODE_OFF 1281 * @see #STATISTICS_FACE_DETECT_MODE_SIMPLE 1282 * @see #STATISTICS_FACE_DETECT_MODE_FULL 1283 */ 1284 public static final Key<Integer> STATISTICS_FACE_DETECT_MODE = 1285 new Key<Integer>("android.statistics.faceDetectMode", int.class); 1286 1287 /** 1288 * <p>Whether the HAL needs to output the lens 1289 * shading map in output result metadata</p> 1290 * <p>When set to ON, 1291 * {@link CaptureResult#STATISTICS_LENS_SHADING_MAP android.statistics.lensShadingMap} must be provided in 1292 * the output result metadata.</p> 1293 * 1294 * @see CaptureResult#STATISTICS_LENS_SHADING_MAP 1295 * @see #STATISTICS_LENS_SHADING_MAP_MODE_OFF 1296 * @see #STATISTICS_LENS_SHADING_MAP_MODE_ON 1297 */ 1298 public static final Key<Integer> STATISTICS_LENS_SHADING_MAP_MODE = 1299 new Key<Integer>("android.statistics.lensShadingMapMode", int.class); 1300 1301 /** 1302 * <p>Tonemapping / contrast / gamma curve for the blue 1303 * channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is 1304 * CONTRAST_CURVE.</p> 1305 * <p>See {@link CaptureRequest#TONEMAP_CURVE_RED android.tonemap.curveRed} for more details.</p> 1306 * 1307 * @see CaptureRequest#TONEMAP_CURVE_RED 1308 * @see CaptureRequest#TONEMAP_MODE 1309 */ 1310 public static final Key<float[]> TONEMAP_CURVE_BLUE = 1311 new Key<float[]>("android.tonemap.curveBlue", float[].class); 1312 1313 /** 1314 * <p>Tonemapping / contrast / gamma curve for the green 1315 * channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is 1316 * CONTRAST_CURVE.</p> 1317 * <p>See {@link CaptureRequest#TONEMAP_CURVE_RED android.tonemap.curveRed} for more details.</p> 1318 * 1319 * @see CaptureRequest#TONEMAP_CURVE_RED 1320 * @see CaptureRequest#TONEMAP_MODE 1321 */ 1322 public static final Key<float[]> TONEMAP_CURVE_GREEN = 1323 new Key<float[]>("android.tonemap.curveGreen", float[].class); 1324 1325 /** 1326 * <p>Tonemapping / contrast / gamma curve for the red 1327 * channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is 1328 * CONTRAST_CURVE.</p> 1329 * <p>Each channel's curve is defined by an array of control points:</p> 1330 * <pre><code>{@link CaptureRequest#TONEMAP_CURVE_RED android.tonemap.curveRed} = 1331 * [ P0in, P0out, P1in, P1out, P2in, P2out, P3in, P3out, ..., PNin, PNout ] 1332 * 2 <= N <= {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</code></pre> 1333 * <p>These are sorted in order of increasing <code>Pin</code>; it is always 1334 * guaranteed that input values 0.0 and 1.0 are included in the list to 1335 * define a complete mapping. For input values between control points, 1336 * the camera device must linearly interpolate between the control 1337 * points.</p> 1338 * <p>Each curve can have an independent number of points, and the number 1339 * of points can be less than max (that is, the request doesn't have to 1340 * always provide a curve with number of points equivalent to 1341 * {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}).</p> 1342 * <p>A few examples, and their corresponding graphical mappings; these 1343 * only specify the red channel and the precision is limited to 4 1344 * digits, for conciseness.</p> 1345 * <p>Linear mapping:</p> 1346 * <pre><code>{@link CaptureRequest#TONEMAP_CURVE_RED android.tonemap.curveRed} = [ 0, 0, 1.0, 1.0 ] 1347 * </code></pre> 1348 * <p><img alt="Linear mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/linear_tonemap.png" /></p> 1349 * <p>Invert mapping:</p> 1350 * <pre><code>{@link CaptureRequest#TONEMAP_CURVE_RED android.tonemap.curveRed} = [ 0, 1.0, 1.0, 0 ] 1351 * </code></pre> 1352 * <p><img alt="Inverting mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/inverse_tonemap.png" /></p> 1353 * <p>Gamma 1/2.2 mapping, with 16 control points:</p> 1354 * <pre><code>{@link CaptureRequest#TONEMAP_CURVE_RED android.tonemap.curveRed} = [ 1355 * 0.0000, 0.0000, 0.0667, 0.2920, 0.1333, 0.4002, 0.2000, 0.4812, 1356 * 0.2667, 0.5484, 0.3333, 0.6069, 0.4000, 0.6594, 0.4667, 0.7072, 1357 * 0.5333, 0.7515, 0.6000, 0.7928, 0.6667, 0.8317, 0.7333, 0.8685, 1358 * 0.8000, 0.9035, 0.8667, 0.9370, 0.9333, 0.9691, 1.0000, 1.0000 ] 1359 * </code></pre> 1360 * <p><img alt="Gamma = 1/2.2 tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/gamma_tonemap.png" /></p> 1361 * <p>Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points:</p> 1362 * <pre><code>{@link CaptureRequest#TONEMAP_CURVE_RED android.tonemap.curveRed} = [ 1363 * 0.0000, 0.0000, 0.0667, 0.2864, 0.1333, 0.4007, 0.2000, 0.4845, 1364 * 0.2667, 0.5532, 0.3333, 0.6125, 0.4000, 0.6652, 0.4667, 0.7130, 1365 * 0.5333, 0.7569, 0.6000, 0.7977, 0.6667, 0.8360, 0.7333, 0.8721, 1366 * 0.8000, 0.9063, 0.8667, 0.9389, 0.9333, 0.9701, 1.0000, 1.0000 ] 1367 * </code></pre> 1368 * <p><img alt="sRGB tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p> 1369 * 1370 * @see CaptureRequest#TONEMAP_CURVE_RED 1371 * @see CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS 1372 * @see CaptureRequest#TONEMAP_MODE 1373 */ 1374 public static final Key<float[]> TONEMAP_CURVE_RED = 1375 new Key<float[]>("android.tonemap.curveRed", float[].class); 1376 1377 /** 1378 * <p>High-level global contrast/gamma/tonemapping control.</p> 1379 * <p>When switching to an application-defined contrast curve by setting 1380 * {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} to CONTRAST_CURVE, the curve is defined 1381 * per-channel with a set of <code>(in, out)</code> points that specify the 1382 * mapping from input high-bit-depth pixel value to the output 1383 * low-bit-depth value. Since the actual pixel ranges of both input 1384 * and output may change depending on the camera pipeline, the values 1385 * are specified by normalized floating-point numbers.</p> 1386 * <p>More-complex color mapping operations such as 3D color look-up 1387 * tables, selective chroma enhancement, or other non-linear color 1388 * transforms will be disabled when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is 1389 * CONTRAST_CURVE.</p> 1390 * <p>When using either FAST or HIGH_QUALITY, the camera device will 1391 * emit its own tonemap curve in {@link CaptureRequest#TONEMAP_CURVE_RED android.tonemap.curveRed}, 1392 * {@link CaptureRequest#TONEMAP_CURVE_GREEN android.tonemap.curveGreen}, and {@link CaptureRequest#TONEMAP_CURVE_BLUE android.tonemap.curveBlue}. 1393 * These values are always available, and as close as possible to the 1394 * actually used nonlinear/nonglobal transforms.</p> 1395 * <p>If a request is sent with TRANSFORM_MATRIX with the camera device's 1396 * provided curve in FAST or HIGH_QUALITY, the image's tonemap will be 1397 * roughly the same.</p> 1398 * 1399 * @see CaptureRequest#TONEMAP_CURVE_BLUE 1400 * @see CaptureRequest#TONEMAP_CURVE_GREEN 1401 * @see CaptureRequest#TONEMAP_CURVE_RED 1402 * @see CaptureRequest#TONEMAP_MODE 1403 * @see #TONEMAP_MODE_CONTRAST_CURVE 1404 * @see #TONEMAP_MODE_FAST 1405 * @see #TONEMAP_MODE_HIGH_QUALITY 1406 */ 1407 public static final Key<Integer> TONEMAP_MODE = 1408 new Key<Integer>("android.tonemap.mode", int.class); 1409 1410 /** 1411 * <p>This LED is nominally used to indicate to the user 1412 * that the camera is powered on and may be streaming images back to the 1413 * Application Processor. In certain rare circumstances, the OS may 1414 * disable this when video is processed locally and not transmitted to 1415 * any untrusted applications.</p> 1416 * <p>In particular, the LED <em>must</em> always be on when the data could be 1417 * transmitted off the device. The LED <em>should</em> always be on whenever 1418 * data is stored locally on the device.</p> 1419 * <p>The LED <em>may</em> be off if a trusted application is using the data that 1420 * doesn't violate the above rules.</p> 1421 * @hide 1422 */ 1423 public static final Key<Boolean> LED_TRANSMIT = 1424 new Key<Boolean>("android.led.transmit", boolean.class); 1425 1426 /** 1427 * <p>Whether black-level compensation is locked 1428 * to its current values, or is free to vary.</p> 1429 * <p>When set to ON, the values used for black-level 1430 * compensation will not change until the lock is set to 1431 * OFF.</p> 1432 * <p>Since changes to certain capture parameters (such as 1433 * exposure time) may require resetting of black level 1434 * compensation, the camera device must report whether setting 1435 * the black level lock was successful in the output result 1436 * metadata.</p> 1437 * <p>For example, if a sequence of requests is as follows:</p> 1438 * <ul> 1439 * <li>Request 1: Exposure = 10ms, Black level lock = OFF</li> 1440 * <li>Request 2: Exposure = 10ms, Black level lock = ON</li> 1441 * <li>Request 3: Exposure = 10ms, Black level lock = ON</li> 1442 * <li>Request 4: Exposure = 20ms, Black level lock = ON</li> 1443 * <li>Request 5: Exposure = 20ms, Black level lock = ON</li> 1444 * <li>Request 6: Exposure = 20ms, Black level lock = ON</li> 1445 * </ul> 1446 * <p>And the exposure change in Request 4 requires the camera 1447 * device to reset the black level offsets, then the output 1448 * result metadata is expected to be:</p> 1449 * <ul> 1450 * <li>Result 1: Exposure = 10ms, Black level lock = OFF</li> 1451 * <li>Result 2: Exposure = 10ms, Black level lock = ON</li> 1452 * <li>Result 3: Exposure = 10ms, Black level lock = ON</li> 1453 * <li>Result 4: Exposure = 20ms, Black level lock = OFF</li> 1454 * <li>Result 5: Exposure = 20ms, Black level lock = ON</li> 1455 * <li>Result 6: Exposure = 20ms, Black level lock = ON</li> 1456 * </ul> 1457 * <p>This indicates to the application that on frame 4, black 1458 * levels were reset due to exposure value changes, and pixel 1459 * values may not be consistent across captures.</p> 1460 * <p>The camera device will maintain the lock to the extent 1461 * possible, only overriding the lock to OFF when changes to 1462 * other request parameters require a black level recalculation 1463 * or reset.</p> 1464 */ 1465 public static final Key<Boolean> BLACK_LEVEL_LOCK = 1466 new Key<Boolean>("android.blackLevel.lock", boolean.class); 1467 1468 /*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~ 1469 * End generated code 1470 *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~O@*/ 1471} 1472
