• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 
17 package android.hardware.camera2;
18 
19 import android.annotation.NonNull;
20 import android.annotation.TestApi;
21 import android.compat.annotation.UnsupportedAppUsage;
22 import android.hardware.camera2.impl.CameraMetadataNative;
23 import android.hardware.camera2.impl.PublicKey;
24 import android.hardware.camera2.impl.SyntheticKey;
25 import android.util.Log;
26 
27 import java.lang.reflect.Field;
28 import java.lang.reflect.Modifier;
29 import java.util.ArrayList;
30 import java.util.Arrays;
31 import java.util.Collections;
32 import java.util.List;
33 
34 /**
35  * The base class for camera controls and information.
36  *
37  * <p>
38  * This class defines the basic key/value map used for querying for camera
39  * characteristics or capture results, and for setting camera request
40  * parameters.
41  * </p>
42  *
43  * <p>
44  * All instances of CameraMetadata are immutable. The list of keys with {@link #getKeys()}
45  * never changes, nor do the values returned by any key with {@code #get} throughout
46  * the lifetime of the object.
47  * </p>
48  *
49  * @see CameraDevice
50  * @see CameraManager
51  * @see CameraCharacteristics
52  **/
53 public abstract class CameraMetadata<TKey> {
54 
55     private static final String TAG = "CameraMetadataAb";
56     private static final boolean DEBUG = false;
57     private CameraMetadataNative mNativeInstance = null;
58 
59     /**
60      * Set a camera metadata field to a value. The field definitions can be
61      * found in {@link CameraCharacteristics}, {@link CaptureResult}, and
62      * {@link CaptureRequest}.
63      *
64      * @param key The metadata field to write.
65      * @param value The value to set the field to, which must be of a matching
66      * type to the key.
67      *
68      * @hide
69      */
CameraMetadata()70     protected CameraMetadata() {
71     }
72 
73     /**
74      * Get a camera metadata field value.
75      *
76      * <p>The field definitions can be
77      * found in {@link CameraCharacteristics}, {@link CaptureResult}, and
78      * {@link CaptureRequest}.</p>
79      *
80      * <p>Querying the value for the same key more than once will return a value
81      * which is equal to the previous queried value.</p>
82      *
83      * @throws IllegalArgumentException if the key was not valid
84      *
85      * @param key The metadata field to read.
86      * @return The value of that key, or {@code null} if the field is not set.
87      *
88      * @hide
89      */
getProtected(TKey key)90      protected abstract <T> T getProtected(TKey key);
91 
92     /**
93      * @hide
94      */
setNativeInstance(CameraMetadataNative nativeInstance)95     protected void setNativeInstance(CameraMetadataNative nativeInstance) {
96         mNativeInstance = nativeInstance;
97     }
98 
99     /**
100      * Retrieves the native std::shared_ptr<CameraMetadata*>* as a Java long.
101      * Returns 0 if mNativeInstance is null.
102      *
103      * @hide
104      */
105     @UnsupportedAppUsage(publicAlternatives = "This method is exposed for native "
106                         + "{@code ACameraMetadata_fromCameraMetadata} in {@code libcamera2ndk}.")
getNativeMetadataPtr()107     public long getNativeMetadataPtr() {
108         if (mNativeInstance == null) {
109             return 0;
110         } else {
111             return mNativeInstance.getMetadataPtr();
112         }
113     }
114 
115     /**
116      * Retrieves the CameraMetadataNative instance.
117      *
118      * @hide
119      */
getNativeMetadata()120     public CameraMetadataNative getNativeMetadata() {
121         return mNativeInstance;
122     }
123 
124     /**
125      * @hide
126      */
getKeyClass()127     protected abstract Class<TKey> getKeyClass();
128 
129     /**
130      * Returns a list of the keys contained in this map.
131      *
132      * <p>The list returned is not modifiable, so any attempts to modify it will throw
133      * a {@code UnsupportedOperationException}.</p>
134      *
135      * <p>All values retrieved by a key from this list with {@code #get} are guaranteed to be
136      * non-{@code null}. Each key is only listed once in the list. The order of the keys
137      * is undefined.</p>
138      *
139      * @return List of the keys contained in this map.
140      */
141     @SuppressWarnings("unchecked")
142     @NonNull
getKeys()143     public List<TKey> getKeys() {
144         Class<CameraMetadata<TKey>> thisClass = (Class<CameraMetadata<TKey>>) getClass();
145         return Collections.unmodifiableList(
146                 getKeys(thisClass, getKeyClass(), this, /*filterTags*/null,
147                     /*includeSynthetic*/ true));
148     }
149 
150     /**
151      * Return a list of all the Key<?> that are declared as a field inside of the class
152      * {@code type}.
153      *
154      * <p>
155      * Optionally, if {@code instance} is not null, then filter out any keys with null values.
156      * </p>
157      *
158      * <p>
159      * Optionally, if {@code filterTags} is not {@code null}, then filter out any keys
160      * whose native {@code tag} is not in {@code filterTags}. The {@code filterTags} array will be
161      * sorted as a side effect.
162      * {@code includeSynthetic} Includes public syntenthic fields by default.
163      * </p>
164      */
165      /*package*/ @SuppressWarnings("unchecked")
getKeys( Class<?> type, Class<TKey> keyClass, CameraMetadata<TKey> instance, int[] filterTags, boolean includeSynthetic)166     <TKey> ArrayList<TKey> getKeys(
167              Class<?> type, Class<TKey> keyClass,
168              CameraMetadata<TKey> instance,
169              int[] filterTags, boolean includeSynthetic) {
170 
171         if (DEBUG) Log.v(TAG, "getKeysStatic for " + type);
172 
173         // TotalCaptureResult does not have any of the keys on it, use CaptureResult instead
174         if (type.equals(TotalCaptureResult.class)) {
175             type = CaptureResult.class;
176         }
177 
178         if (filterTags != null) {
179             Arrays.sort(filterTags);
180         }
181 
182         ArrayList<TKey> keyList = new ArrayList<TKey>();
183 
184         Field[] fields = type.getDeclaredFields();
185         for (Field field : fields) {
186             // Filter for Keys that are public
187             if (field.getType().isAssignableFrom(keyClass) &&
188                     (field.getModifiers() & Modifier.PUBLIC) != 0) {
189 
190                 TKey key;
191                 try {
192                     key = (TKey) field.get(instance);
193                 } catch (IllegalAccessException e) {
194                     throw new AssertionError("Can't get IllegalAccessException", e);
195                 } catch (IllegalArgumentException e) {
196                     throw new AssertionError("Can't get IllegalArgumentException", e);
197                 }
198 
199                 if (instance == null || instance.getProtected(key) != null) {
200                     if (shouldKeyBeAdded(key, field, filterTags, includeSynthetic)) {
201                         keyList.add(key);
202 
203                         if (DEBUG) {
204                             Log.v(TAG, "getKeysStatic - key was added - " + key);
205                         }
206                     } else if (DEBUG) {
207                         Log.v(TAG, "getKeysStatic - key was filtered - " + key);
208                     }
209                 }
210             }
211         }
212 
213         if (null == mNativeInstance) {
214             return keyList;
215         }
216 
217         ArrayList<TKey> vendorKeys = mNativeInstance.getAllVendorKeys(keyClass);
218 
219         if (vendorKeys != null) {
220             for (TKey k : vendorKeys) {
221                 String keyName;
222                 long vendorId;
223                 if (k instanceof CaptureRequest.Key<?>) {
224                     keyName = ((CaptureRequest.Key<?>) k).getName();
225                     vendorId = ((CaptureRequest.Key<?>) k).getVendorId();
226                 } else if (k instanceof CaptureResult.Key<?>) {
227                     keyName = ((CaptureResult.Key<?>) k).getName();
228                     vendorId = ((CaptureResult.Key<?>) k).getVendorId();
229                 } else if (k instanceof CameraCharacteristics.Key<?>) {
230                     keyName = ((CameraCharacteristics.Key<?>) k).getName();
231                     vendorId = ((CameraCharacteristics.Key<?>) k).getVendorId();
232                 } else {
233                     continue;
234                 }
235 
236 
237                 if (filterTags != null && Arrays.binarySearch(filterTags,
238                         CameraMetadataNative.getTag(keyName, vendorId)) < 0) {
239                     // ignore vendor keys not in filterTags
240                     continue;
241                 }
242                 if (instance == null || instance.getProtected(k) != null)  {
243                     keyList.add(k);
244                 }
245 
246             }
247         }
248 
249         return keyList;
250     }
251 
252     @SuppressWarnings("rawtypes")
shouldKeyBeAdded(TKey key, Field field, int[] filterTags, boolean includeSynthetic)253     private static <TKey> boolean shouldKeyBeAdded(TKey key, Field field, int[] filterTags,
254             boolean includeSynthetic) {
255         if (key == null) {
256             throw new NullPointerException("key must not be null");
257         }
258 
259         CameraMetadataNative.Key nativeKey;
260 
261         /*
262          * Get the native key from the public api key
263          */
264         if (key instanceof CameraCharacteristics.Key) {
265             nativeKey = ((CameraCharacteristics.Key)key).getNativeKey();
266         } else if (key instanceof CaptureResult.Key) {
267             nativeKey = ((CaptureResult.Key)key).getNativeKey();
268         } else if (key instanceof CaptureRequest.Key) {
269             nativeKey = ((CaptureRequest.Key)key).getNativeKey();
270         } else {
271             // Reject fields that aren't a key
272             throw new IllegalArgumentException("key type must be that of a metadata key");
273         }
274 
275         if (field.getAnnotation(PublicKey.class) == null) {
276             // Never expose @hide keys up to the API user
277             return false;
278         }
279 
280         // No filtering necessary
281         if (filterTags == null) {
282             return true;
283         }
284 
285         if (field.getAnnotation(SyntheticKey.class) != null) {
286             // This key is synthetic, so calling #getTag will throw IAE
287 
288             return includeSynthetic;
289         }
290 
291         /*
292          * Regular key: look up it's native tag and see if it's in filterTags
293          */
294 
295         int keyTag = nativeKey.getTag();
296 
297         // non-negative result is returned iff the value is in the array
298         return Arrays.binarySearch(filterTags, keyTag) >= 0;
299     }
300 
301     /*@O~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
302      * The enum values below this point are generated from metadata
303      * definitions in /system/media/camera/docs. Do not modify by hand or
304      * modify the comment blocks at the start or end.
305      *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~*/
306 
307     //
308     // Enumeration values for CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
309     //
310 
311     /**
312      * <p>The lens focus distance is not accurate, and the units used for
313      * {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} do not correspond to any physical units.</p>
314      * <p>Setting the lens to the same focus distance on separate occasions may
315      * result in a different real focus distance, depending on factors such
316      * as the orientation of the device, the age of the focusing mechanism,
317      * and the device temperature. The focus distance value will still be
318      * in the range of <code>[0, {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}]</code>, where 0
319      * represents the farthest focus.</p>
320      *
321      * @see CaptureRequest#LENS_FOCUS_DISTANCE
322      * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
323      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
324      */
325     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED = 0;
326 
327     /**
328      * <p>The lens focus distance is measured in diopters.</p>
329      * <p>However, setting the lens to the same focus distance
330      * on separate occasions may result in a different real
331      * focus distance, depending on factors such as the
332      * orientation of the device, the age of the focusing
333      * mechanism, and the device temperature.</p>
334      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
335      */
336     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE = 1;
337 
338     /**
339      * <p>The lens focus distance is measured in diopters, and
340      * is calibrated.</p>
341      * <p>The lens mechanism is calibrated so that setting the
342      * same focus distance is repeatable on multiple
343      * occasions with good accuracy, and the focus distance
344      * corresponds to the real physical distance to the plane
345      * of best focus.</p>
346      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
347      */
348     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED = 2;
349 
350     //
351     // Enumeration values for CameraCharacteristics#LENS_FACING
352     //
353 
354     /**
355      * <p>The camera device faces the same direction as the device's screen.</p>
356      * @see CameraCharacteristics#LENS_FACING
357      */
358     public static final int LENS_FACING_FRONT = 0;
359 
360     /**
361      * <p>The camera device faces the opposite direction as the device's screen.</p>
362      * @see CameraCharacteristics#LENS_FACING
363      */
364     public static final int LENS_FACING_BACK = 1;
365 
366     /**
367      * <p>The camera device is an external camera, and has no fixed facing relative to the
368      * device's screen.</p>
369      * @see CameraCharacteristics#LENS_FACING
370      */
371     public static final int LENS_FACING_EXTERNAL = 2;
372 
373     //
374     // Enumeration values for CameraCharacteristics#LENS_POSE_REFERENCE
375     //
376 
377     /**
378      * <p>The value of {@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation} is relative to the optical center of
379      * the largest camera device facing the same direction as this camera.</p>
380      * <p>This is the default value for API levels before Android P.</p>
381      *
382      * @see CameraCharacteristics#LENS_POSE_TRANSLATION
383      * @see CameraCharacteristics#LENS_POSE_REFERENCE
384      */
385     public static final int LENS_POSE_REFERENCE_PRIMARY_CAMERA = 0;
386 
387     /**
388      * <p>The value of {@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation} is relative to the position of the
389      * primary gyroscope of this Android device.</p>
390      *
391      * @see CameraCharacteristics#LENS_POSE_TRANSLATION
392      * @see CameraCharacteristics#LENS_POSE_REFERENCE
393      */
394     public static final int LENS_POSE_REFERENCE_GYROSCOPE = 1;
395 
396     /**
397      * <p>The camera device cannot represent the values of {@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation}
398      * and {@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation} accurately enough. One such example is a camera device
399      * on the cover of a foldable phone: in order to measure the pose translation and rotation,
400      * some kind of hinge position sensor would be needed.</p>
401      * <p>The value of {@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation} must be all zeros, and
402      * {@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation} must be values matching its default facing.</p>
403      *
404      * @see CameraCharacteristics#LENS_POSE_ROTATION
405      * @see CameraCharacteristics#LENS_POSE_TRANSLATION
406      * @see CameraCharacteristics#LENS_POSE_REFERENCE
407      */
408     public static final int LENS_POSE_REFERENCE_UNDEFINED = 2;
409 
410     //
411     // Enumeration values for CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
412     //
413 
414     /**
415      * <p>The minimal set of capabilities that every camera
416      * device (regardless of {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel})
417      * supports.</p>
418      * <p>This capability is listed by all normal devices, and
419      * indicates that the camera device has a feature set
420      * that's comparable to the baseline requirements for the
421      * older android.hardware.Camera API.</p>
422      * <p>Devices with the DEPTH_OUTPUT capability might not list this
423      * capability, indicating that they support only depth measurement,
424      * not standard color output.</p>
425      *
426      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
427      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
428      */
429     public static final int REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE = 0;
430 
431     /**
432      * <p>The camera device can be manually controlled (3A algorithms such
433      * as auto-exposure, and auto-focus can be bypassed).
434      * The camera device supports basic manual control of the sensor image
435      * acquisition related stages. This means the following controls are
436      * guaranteed to be supported:</p>
437      * <ul>
438      * <li>Manual frame duration control<ul>
439      * <li>{@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}</li>
440      * <li>{@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration}</li>
441      * </ul>
442      * </li>
443      * <li>Manual exposure control<ul>
444      * <li>{@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</li>
445      * <li>{@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</li>
446      * </ul>
447      * </li>
448      * <li>Manual sensitivity control<ul>
449      * <li>{@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</li>
450      * <li>{@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}</li>
451      * </ul>
452      * </li>
453      * <li>Manual lens control (if the lens is adjustable)<ul>
454      * <li>android.lens.*</li>
455      * </ul>
456      * </li>
457      * <li>Manual flash control (if a flash unit is present)<ul>
458      * <li>android.flash.*</li>
459      * </ul>
460      * </li>
461      * <li>Manual black level locking<ul>
462      * <li>{@link CaptureRequest#BLACK_LEVEL_LOCK android.blackLevel.lock}</li>
463      * </ul>
464      * </li>
465      * <li>Auto exposure lock<ul>
466      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
467      * </ul>
468      * </li>
469      * </ul>
470      * <p>If any of the above 3A algorithms are enabled, then the camera
471      * device will accurately report the values applied by 3A in the
472      * result.</p>
473      * <p>A given camera device may also support additional manual sensor controls,
474      * but this capability only covers the above list of controls.</p>
475      * <p>If this is supported, {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap} will
476      * additionally return a min frame duration that is greater than
477      * zero for each supported size-format combination.</p>
478      * <p>For camera devices with LOGICAL_MULTI_CAMERA capability, when the underlying active
479      * physical camera switches, exposureTime, sensitivity, and lens properties may change
480      * even if AE/AF is locked. However, the overall auto exposure and auto focus experience
481      * for users will be consistent. Refer to LOGICAL_MULTI_CAMERA capability for details.</p>
482      *
483      * @see CaptureRequest#BLACK_LEVEL_LOCK
484      * @see CaptureRequest#CONTROL_AE_LOCK
485      * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
486      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
487      * @see CaptureRequest#SENSOR_FRAME_DURATION
488      * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
489      * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
490      * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
491      * @see CaptureRequest#SENSOR_SENSITIVITY
492      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
493      */
494     public static final int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR = 1;
495 
496     /**
497      * <p>The camera device post-processing stages can be manually controlled.
498      * The camera device supports basic manual control of the image post-processing
499      * stages. This means the following controls are guaranteed to be supported:</p>
500      * <ul>
501      * <li>
502      * <p>Manual tonemap control</p>
503      * <ul>
504      * <li>{@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}</li>
505      * <li>{@link CaptureRequest#TONEMAP_MODE android.tonemap.mode}</li>
506      * <li>{@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</li>
507      * <li>{@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma}</li>
508      * <li>{@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve}</li>
509      * </ul>
510      * </li>
511      * <li>
512      * <p>Manual white balance control</p>
513      * <ul>
514      * <li>{@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}</li>
515      * <li>{@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}</li>
516      * </ul>
517      * </li>
518      * <li>Manual lens shading map control<ul>
519      * <li>{@link CaptureRequest#SHADING_MODE android.shading.mode}</li>
520      * <li>{@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode}</li>
521      * <li>android.statistics.lensShadingMap</li>
522      * <li>android.lens.info.shadingMapSize</li>
523      * </ul>
524      * </li>
525      * <li>Manual aberration correction control (if aberration correction is supported)<ul>
526      * <li>{@link CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE android.colorCorrection.aberrationMode}</li>
527      * <li>{@link CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES android.colorCorrection.availableAberrationModes}</li>
528      * </ul>
529      * </li>
530      * <li>Auto white balance lock<ul>
531      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
532      * </ul>
533      * </li>
534      * </ul>
535      * <p>If auto white balance is enabled, then the camera device
536      * will accurately report the values applied by AWB in the result.</p>
537      * <p>A given camera device may also support additional post-processing
538      * controls, but this capability only covers the above list of controls.</p>
539      * <p>For camera devices with LOGICAL_MULTI_CAMERA capability, when underlying active
540      * physical camera switches, tonemap, white balance, and shading map may change even if
541      * awb is locked. However, the overall post-processing experience for users will be
542      * consistent. Refer to LOGICAL_MULTI_CAMERA capability for details.</p>
543      *
544      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
545      * @see CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
546      * @see CaptureRequest#COLOR_CORRECTION_GAINS
547      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
548      * @see CaptureRequest#CONTROL_AWB_LOCK
549      * @see CaptureRequest#SHADING_MODE
550      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
551      * @see CaptureRequest#TONEMAP_CURVE
552      * @see CaptureRequest#TONEMAP_GAMMA
553      * @see CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS
554      * @see CaptureRequest#TONEMAP_MODE
555      * @see CaptureRequest#TONEMAP_PRESET_CURVE
556      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
557      */
558     public static final int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING = 2;
559 
560     /**
561      * <p>The camera device supports outputting RAW buffers and
562      * metadata for interpreting them.</p>
563      * <p>Devices supporting the RAW capability allow both for
564      * saving DNG files, and for direct application processing of
565      * raw sensor images.</p>
566      * <ul>
567      * <li>RAW_SENSOR is supported as an output format.</li>
568      * <li>The maximum available resolution for RAW_SENSOR streams
569      *   will match either the value in
570      *   {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize} or
571      *   {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize}.</li>
572      * <li>All DNG-related optional metadata entries are provided
573      *   by the camera device.</li>
574      * </ul>
575      *
576      * @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
577      * @see CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
578      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
579      */
580     public static final int REQUEST_AVAILABLE_CAPABILITIES_RAW = 3;
581 
582     /**
583      * <p>The camera device supports the Zero Shutter Lag reprocessing use case.</p>
584      * <ul>
585      * <li>One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.</li>
586      * <li>{@link android.graphics.ImageFormat#PRIVATE } is supported as an output/input format,
587      *   that is, {@link android.graphics.ImageFormat#PRIVATE } is included in the lists of
588      *   formats returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats } and {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats }.</li>
589      * <li>{@link android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput }
590      *   returns non-empty int[] for each supported input format returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats }.</li>
591      * <li>Each size returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputSizes getInputSizes(ImageFormat.PRIVATE)} is also included in {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes getOutputSizes(ImageFormat.PRIVATE)}</li>
592      * <li>Using {@link android.graphics.ImageFormat#PRIVATE } does not cause a frame rate drop
593      *   relative to the sensor's maximum capture rate (at that resolution).</li>
594      * <li>{@link android.graphics.ImageFormat#PRIVATE } will be reprocessable into both
595      *   {@link android.graphics.ImageFormat#YUV_420_888 } and
596      *   {@link android.graphics.ImageFormat#JPEG } formats.</li>
597      * <li>For a MONOCHROME camera supporting Y8 format, {@link android.graphics.ImageFormat#PRIVATE } will be reprocessable into
598      *   {@link android.graphics.ImageFormat#Y8 }.</li>
599      * <li>The maximum available resolution for PRIVATE streams
600      *   (both input/output) will match the maximum available
601      *   resolution of JPEG streams.</li>
602      * <li>Static metadata {@link CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL android.reprocess.maxCaptureStall}.</li>
603      * <li>Only below controls are effective for reprocessing requests and
604      *   will be present in capture results, other controls in reprocess
605      *   requests will be ignored by the camera device.<ul>
606      * <li>android.jpeg.*</li>
607      * <li>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</li>
608      * <li>{@link CaptureRequest#EDGE_MODE android.edge.mode}</li>
609      * </ul>
610      * </li>
611      * <li>{@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes} and
612      *   {@link CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES android.edge.availableEdgeModes} will both list ZERO_SHUTTER_LAG as a supported mode.</li>
613      * </ul>
614      *
615      * @see CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES
616      * @see CaptureRequest#EDGE_MODE
617      * @see CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
618      * @see CaptureRequest#NOISE_REDUCTION_MODE
619      * @see CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL
620      * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
621      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
622      */
623     public static final int REQUEST_AVAILABLE_CAPABILITIES_PRIVATE_REPROCESSING = 4;
624 
625     /**
626      * <p>The camera device supports accurately reporting the sensor settings for many of
627      * the sensor controls while the built-in 3A algorithm is running.  This allows
628      * reporting of sensor settings even when these settings cannot be manually changed.</p>
629      * <p>The values reported for the following controls are guaranteed to be available
630      * in the CaptureResult, including when 3A is enabled:</p>
631      * <ul>
632      * <li>Exposure control<ul>
633      * <li>{@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</li>
634      * </ul>
635      * </li>
636      * <li>Sensitivity control<ul>
637      * <li>{@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</li>
638      * </ul>
639      * </li>
640      * <li>Lens controls (if the lens is adjustable)<ul>
641      * <li>{@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance}</li>
642      * <li>{@link CaptureRequest#LENS_APERTURE android.lens.aperture}</li>
643      * </ul>
644      * </li>
645      * </ul>
646      * <p>This capability is a subset of the MANUAL_SENSOR control capability, and will
647      * always be included if the MANUAL_SENSOR capability is available.</p>
648      *
649      * @see CaptureRequest#LENS_APERTURE
650      * @see CaptureRequest#LENS_FOCUS_DISTANCE
651      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
652      * @see CaptureRequest#SENSOR_SENSITIVITY
653      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
654      */
655     public static final int REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS = 5;
656 
657     /**
658      * <p>The camera device supports capturing high-resolution images at &gt;= 20 frames per
659      * second, in at least the uncompressed YUV format, when post-processing settings are
660      * set to FAST. Additionally, all image resolutions less than 24 megapixels can be
661      * captured at &gt;= 10 frames per second. Here, 'high resolution' means at least 8
662      * megapixels, or the maximum resolution of the device, whichever is smaller.</p>
663      * <p>More specifically, this means that a size matching the camera device's active array
664      * size is listed as a supported size for the {@link android.graphics.ImageFormat#YUV_420_888 } format in either {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes } or {@link android.hardware.camera2.params.StreamConfigurationMap#getHighResolutionOutputSizes },
665      * with a minimum frame duration for that format and size of either &lt;= 1/20 s, or
666      * &lt;= 1/10 s if the image size is less than 24 megapixels, respectively; and
667      * the {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges} entry lists at least one FPS range
668      * where the minimum FPS is &gt;= 1 / minimumFrameDuration for the maximum-size
669      * YUV_420_888 format.  If that maximum size is listed in {@link android.hardware.camera2.params.StreamConfigurationMap#getHighResolutionOutputSizes },
670      * then the list of resolutions for YUV_420_888 from {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes } contains at
671      * least one resolution &gt;= 8 megapixels, with a minimum frame duration of &lt;= 1/20
672      * s.</p>
673      * <p>If the device supports the {@link android.graphics.ImageFormat#RAW10 }, {@link android.graphics.ImageFormat#RAW12 }, {@link android.graphics.ImageFormat#Y8 }, then those can also be
674      * captured at the same rate as the maximum-size YUV_420_888 resolution is.</p>
675      * <p>If the device supports the PRIVATE_REPROCESSING capability, then the same guarantees
676      * as for the YUV_420_888 format also apply to the {@link android.graphics.ImageFormat#PRIVATE } format.</p>
677      * <p>In addition, the {@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} field is guaranted to have a value between 0
678      * and 4, inclusive. {@link CameraCharacteristics#CONTROL_AE_LOCK_AVAILABLE android.control.aeLockAvailable} and {@link CameraCharacteristics#CONTROL_AWB_LOCK_AVAILABLE android.control.awbLockAvailable}
679      * are also guaranteed to be <code>true</code> so burst capture with these two locks ON yields
680      * consistent image output.</p>
681      *
682      * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
683      * @see CameraCharacteristics#CONTROL_AE_LOCK_AVAILABLE
684      * @see CameraCharacteristics#CONTROL_AWB_LOCK_AVAILABLE
685      * @see CameraCharacteristics#SYNC_MAX_LATENCY
686      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
687      */
688     public static final int REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE = 6;
689 
690     /**
691      * <p>The camera device supports the YUV_420_888 reprocessing use case, similar as
692      * PRIVATE_REPROCESSING, This capability requires the camera device to support the
693      * following:</p>
694      * <ul>
695      * <li>One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.</li>
696      * <li>{@link android.graphics.ImageFormat#YUV_420_888 } is supported as an output/input
697      *   format, that is, YUV_420_888 is included in the lists of formats returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats } and {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats }.</li>
698      * <li>{@link android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput }
699      *   returns non-empty int[] for each supported input format returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats }.</li>
700      * <li>Each size returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputSizes getInputSizes(YUV_420_888)} is also included in {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes getOutputSizes(YUV_420_888)}</li>
701      * <li>Using {@link android.graphics.ImageFormat#YUV_420_888 } does not cause a frame rate
702      *   drop relative to the sensor's maximum capture rate (at that resolution).</li>
703      * <li>{@link android.graphics.ImageFormat#YUV_420_888 } will be reprocessable into both
704      *   {@link android.graphics.ImageFormat#YUV_420_888 } and {@link android.graphics.ImageFormat#JPEG } formats.</li>
705      * <li>The maximum available resolution for {@link android.graphics.ImageFormat#YUV_420_888 } streams (both input/output) will match the
706      *   maximum available resolution of {@link android.graphics.ImageFormat#JPEG } streams.</li>
707      * <li>For a MONOCHROME camera with Y8 format support, all the requirements mentioned
708      *   above for YUV_420_888 apply for Y8 format as well.</li>
709      * <li>Static metadata {@link CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL android.reprocess.maxCaptureStall}.</li>
710      * <li>Only the below controls are effective for reprocessing requests and will be present
711      *   in capture results. The reprocess requests are from the original capture results
712      *   that are associated with the intermediate {@link android.graphics.ImageFormat#YUV_420_888 } output buffers.  All other controls in the
713      *   reprocess requests will be ignored by the camera device.<ul>
714      * <li>android.jpeg.*</li>
715      * <li>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</li>
716      * <li>{@link CaptureRequest#EDGE_MODE android.edge.mode}</li>
717      * <li>{@link CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR android.reprocess.effectiveExposureFactor}</li>
718      * </ul>
719      * </li>
720      * <li>{@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes} and
721      *   {@link CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES android.edge.availableEdgeModes} will both list ZERO_SHUTTER_LAG as a supported mode.</li>
722      * </ul>
723      *
724      * @see CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES
725      * @see CaptureRequest#EDGE_MODE
726      * @see CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
727      * @see CaptureRequest#NOISE_REDUCTION_MODE
728      * @see CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR
729      * @see CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL
730      * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
731      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
732      */
733     public static final int REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING = 7;
734 
735     /**
736      * <p>The camera device can produce depth measurements from its field of view.</p>
737      * <p>This capability requires the camera device to support the following:</p>
738      * <ul>
739      * <li>{@link android.graphics.ImageFormat#DEPTH16 } is supported as
740      *   an output format.</li>
741      * <li>{@link android.graphics.ImageFormat#DEPTH_POINT_CLOUD } is
742      *   optionally supported as an output format.</li>
743      * <li>This camera device, and all camera devices with the same {@link CameraCharacteristics#LENS_FACING android.lens.facing}, will
744      *   list the following calibration metadata entries in both {@link android.hardware.camera2.CameraCharacteristics }
745      *   and {@link android.hardware.camera2.CaptureResult }:<ul>
746      * <li>{@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation}</li>
747      * <li>{@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation}</li>
748      * <li>{@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration}</li>
749      * <li>{@link CameraCharacteristics#LENS_DISTORTION android.lens.distortion}</li>
750      * </ul>
751      * </li>
752      * <li>The {@link CameraCharacteristics#DEPTH_DEPTH_IS_EXCLUSIVE android.depth.depthIsExclusive} entry is listed by this device.</li>
753      * <li>As of Android P, the {@link CameraCharacteristics#LENS_POSE_REFERENCE android.lens.poseReference} entry is listed by this device.</li>
754      * <li>A LIMITED camera with only the DEPTH_OUTPUT capability does not have to support
755      *   normal YUV_420_888, Y8, JPEG, and PRIV-format outputs. It only has to support the
756      *   DEPTH16 format.</li>
757      * </ul>
758      * <p>Generally, depth output operates at a slower frame rate than standard color capture,
759      * so the DEPTH16 and DEPTH_POINT_CLOUD formats will commonly have a stall duration that
760      * should be accounted for (see {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration }).
761      * On a device that supports both depth and color-based output, to enable smooth preview,
762      * using a repeating burst is recommended, where a depth-output target is only included
763      * once every N frames, where N is the ratio between preview output rate and depth output
764      * rate, including depth stall time.</p>
765      *
766      * @see CameraCharacteristics#DEPTH_DEPTH_IS_EXCLUSIVE
767      * @see CameraCharacteristics#LENS_DISTORTION
768      * @see CameraCharacteristics#LENS_FACING
769      * @see CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
770      * @see CameraCharacteristics#LENS_POSE_REFERENCE
771      * @see CameraCharacteristics#LENS_POSE_ROTATION
772      * @see CameraCharacteristics#LENS_POSE_TRANSLATION
773      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
774      */
775     public static final int REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT = 8;
776 
777     /**
778      * <p>The device supports constrained high speed video recording (frame rate &gt;=120fps) use
779      * case. The camera device will support high speed capture session created by {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }, which
780      * only accepts high speed request lists created by {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList }.</p>
781      * <p>A camera device can still support high speed video streaming by advertising the high
782      * speed FPS ranges in {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges}. For this case, all
783      * normal capture request per frame control and synchronization requirements will apply
784      * to the high speed fps ranges, the same as all other fps ranges. This capability
785      * describes the capability of a specialized operating mode with many limitations (see
786      * below), which is only targeted at high speed video recording.</p>
787      * <p>The supported high speed video sizes and fps ranges are specified in {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges }.
788      * To get desired output frame rates, the application is only allowed to select video
789      * size and FPS range combinations provided by {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes }.  The
790      * fps range can be controlled via {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}.</p>
791      * <p>In this capability, the camera device will override aeMode, awbMode, and afMode to
792      * ON, AUTO, and CONTINUOUS_VIDEO, respectively. All post-processing block mode
793      * controls will be overridden to be FAST. Therefore, no manual control of capture
794      * and post-processing parameters is possible. All other controls operate the
795      * same as when {@link CaptureRequest#CONTROL_MODE android.control.mode} == AUTO. This means that all other
796      * android.control.* fields continue to work, such as</p>
797      * <ul>
798      * <li>{@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}</li>
799      * <li>{@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}</li>
800      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
801      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
802      * <li>{@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode}</li>
803      * <li>{@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}</li>
804      * <li>{@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}</li>
805      * <li>{@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions}</li>
806      * <li>{@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}</li>
807      * <li>{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}</li>
808      * <li>{@link CaptureRequest#CONTROL_ZOOM_RATIO android.control.zoomRatio}</li>
809      * </ul>
810      * <p>Outside of android.control.*, the following controls will work:</p>
811      * <ul>
812      * <li>{@link CaptureRequest#FLASH_MODE android.flash.mode} (TORCH mode only, automatic flash for still capture will not
813      * work since aeMode is ON)</li>
814      * <li>{@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode} (if it is supported)</li>
815      * <li>{@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}</li>
816      * <li>{@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} (if it is supported)</li>
817      * </ul>
818      * <p>For high speed recording use case, the actual maximum supported frame rate may
819      * be lower than what camera can output, depending on the destination Surfaces for
820      * the image data. For example, if the destination surface is from video encoder,
821      * the application need check if the video encoder is capable of supporting the
822      * high frame rate for a given video size, or it will end up with lower recording
823      * frame rate. If the destination surface is from preview window, the actual preview frame
824      * rate will be bounded by the screen refresh rate.</p>
825      * <p>The camera device will only support up to 2 high speed simultaneous output surfaces
826      * (preview and recording surfaces) in this mode. Above controls will be effective only
827      * if all of below conditions are true:</p>
828      * <ul>
829      * <li>The application creates a camera capture session with no more than 2 surfaces via
830      * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }. The
831      * targeted surfaces must be preview surface (either from {@link android.view.SurfaceView } or {@link android.graphics.SurfaceTexture }) or recording
832      * surface(either from {@link android.media.MediaRecorder#getSurface } or {@link android.media.MediaCodec#createInputSurface }).</li>
833      * <li>The stream sizes are selected from the sizes reported by
834      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes }.</li>
835      * <li>The FPS ranges are selected from {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges }.</li>
836      * </ul>
837      * <p>When above conditions are NOT satistied,
838      * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }
839      * will fail.</p>
840      * <p>Switching to a FPS range that has different maximum FPS may trigger some camera device
841      * reconfigurations, which may introduce extra latency. It is recommended that
842      * the application avoids unnecessary maximum target FPS changes as much as possible
843      * during high speed streaming.</p>
844      *
845      * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
846      * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
847      * @see CaptureRequest#CONTROL_AE_LOCK
848      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
849      * @see CaptureRequest#CONTROL_AE_REGIONS
850      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
851      * @see CaptureRequest#CONTROL_AF_REGIONS
852      * @see CaptureRequest#CONTROL_AF_TRIGGER
853      * @see CaptureRequest#CONTROL_AWB_LOCK
854      * @see CaptureRequest#CONTROL_AWB_REGIONS
855      * @see CaptureRequest#CONTROL_EFFECT_MODE
856      * @see CaptureRequest#CONTROL_MODE
857      * @see CaptureRequest#CONTROL_ZOOM_RATIO
858      * @see CaptureRequest#FLASH_MODE
859      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
860      * @see CaptureRequest#SCALER_CROP_REGION
861      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
862      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
863      */
864     public static final int REQUEST_AVAILABLE_CAPABILITIES_CONSTRAINED_HIGH_SPEED_VIDEO = 9;
865 
866     /**
867      * <p>The camera device supports the MOTION_TRACKING value for
868      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent}, which limits maximum exposure time to 20 ms.</p>
869      * <p>This limits the motion blur of capture images, resulting in better image tracking
870      * results for use cases such as image stabilization or augmented reality.</p>
871      *
872      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
873      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
874      */
875     public static final int REQUEST_AVAILABLE_CAPABILITIES_MOTION_TRACKING = 10;
876 
877     /**
878      * <p>The camera device is a logical camera backed by two or more physical cameras.</p>
879      * <p>In API level 28, the physical cameras must also be exposed to the application via
880      * {@link android.hardware.camera2.CameraManager#getCameraIdList }.</p>
881      * <p>Starting from API level 29:</p>
882      * <ul>
883      * <li>Some or all physical cameras may not be independently exposed to the application,
884      * in which case the physical camera IDs will not be available in
885      * {@link android.hardware.camera2.CameraManager#getCameraIdList }. But the
886      * application can still query the physical cameras' characteristics by calling
887      * {@link android.hardware.camera2.CameraManager#getCameraCharacteristics }.</li>
888      * <li>If a physical camera is hidden from camera ID list, the mandatory stream
889      * combinations for that physical camera must be supported through the logical camera
890      * using physical streams. One exception is that in API level 30, a physical camera
891      * may become unavailable via
892      * {@link CameraManager.AvailabilityCallback#onPhysicalCameraUnavailable }
893      * callback.</li>
894      * </ul>
895      * <p>Combinations of logical and physical streams, or physical streams from different
896      * physical cameras are not guaranteed. However, if the camera device supports
897      * {@link CameraDevice#isSessionConfigurationSupported },
898      * application must be able to query whether a stream combination involving physical
899      * streams is supported by calling
900      * {@link CameraDevice#isSessionConfigurationSupported }.</p>
901      * <p>Camera application shouldn't assume that there are at most 1 rear camera and 1 front
902      * camera in the system. For an application that switches between front and back cameras,
903      * the recommendation is to switch between the first rear camera and the first front
904      * camera in the list of supported camera devices.</p>
905      * <p>This capability requires the camera device to support the following:</p>
906      * <ul>
907      * <li>The IDs of underlying physical cameras are returned via
908      *   {@link android.hardware.camera2.CameraCharacteristics#getPhysicalCameraIds }.</li>
909      * <li>This camera device must list static metadata
910      *   {@link CameraCharacteristics#LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE android.logicalMultiCamera.sensorSyncType} in
911      *   {@link android.hardware.camera2.CameraCharacteristics }.</li>
912      * <li>The underlying physical cameras' static metadata must list the following entries,
913      *   so that the application can correlate pixels from the physical streams:<ul>
914      * <li>{@link CameraCharacteristics#LENS_POSE_REFERENCE android.lens.poseReference}</li>
915      * <li>{@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation}</li>
916      * <li>{@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation}</li>
917      * <li>{@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration}</li>
918      * <li>{@link CameraCharacteristics#LENS_DISTORTION android.lens.distortion}</li>
919      * </ul>
920      * </li>
921      * <li>The SENSOR_INFO_TIMESTAMP_SOURCE of the logical device and physical devices must be
922      *   the same.</li>
923      * <li>The logical camera must be LIMITED or higher device.</li>
924      * </ul>
925      * <p>A logical camera device's dynamic metadata may contain
926      * {@link CaptureResult#LOGICAL_MULTI_CAMERA_ACTIVE_PHYSICAL_ID android.logicalMultiCamera.activePhysicalId} to notify the application of the current
927      * active physical camera Id. An active physical camera is the physical camera from which
928      * the logical camera's main image data outputs (YUV or RAW) and metadata come from.
929      * In addition, this serves as an indication which physical camera is used to output to
930      * a RAW stream, or in case only physical cameras support RAW, which physical RAW stream
931      * the application should request.</p>
932      * <p>Logical camera's static metadata tags below describe the default active physical
933      * camera. An active physical camera is default if it's used when application directly
934      * uses requests built from a template. All templates will default to the same active
935      * physical camera.</p>
936      * <ul>
937      * <li>{@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}</li>
938      * <li>{@link CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT android.sensor.info.colorFilterArrangement}</li>
939      * <li>{@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</li>
940      * <li>{@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration}</li>
941      * <li>{@link CameraCharacteristics#SENSOR_INFO_PHYSICAL_SIZE android.sensor.info.physicalSize}</li>
942      * <li>{@link CameraCharacteristics#SENSOR_INFO_WHITE_LEVEL android.sensor.info.whiteLevel}</li>
943      * <li>{@link CameraCharacteristics#SENSOR_INFO_LENS_SHADING_APPLIED android.sensor.info.lensShadingApplied}</li>
944      * <li>{@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1 android.sensor.referenceIlluminant1}</li>
945      * <li>{@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2 android.sensor.referenceIlluminant2}</li>
946      * <li>{@link CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM1 android.sensor.calibrationTransform1}</li>
947      * <li>{@link CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM2 android.sensor.calibrationTransform2}</li>
948      * <li>{@link CameraCharacteristics#SENSOR_COLOR_TRANSFORM1 android.sensor.colorTransform1}</li>
949      * <li>{@link CameraCharacteristics#SENSOR_COLOR_TRANSFORM2 android.sensor.colorTransform2}</li>
950      * <li>{@link CameraCharacteristics#SENSOR_FORWARD_MATRIX1 android.sensor.forwardMatrix1}</li>
951      * <li>{@link CameraCharacteristics#SENSOR_FORWARD_MATRIX2 android.sensor.forwardMatrix2}</li>
952      * <li>{@link CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN android.sensor.blackLevelPattern}</li>
953      * <li>{@link CameraCharacteristics#SENSOR_MAX_ANALOG_SENSITIVITY android.sensor.maxAnalogSensitivity}</li>
954      * <li>{@link CameraCharacteristics#SENSOR_OPTICAL_BLACK_REGIONS android.sensor.opticalBlackRegions}</li>
955      * <li>{@link CameraCharacteristics#SENSOR_AVAILABLE_TEST_PATTERN_MODES android.sensor.availableTestPatternModes}</li>
956      * <li>{@link CameraCharacteristics#LENS_INFO_HYPERFOCAL_DISTANCE android.lens.info.hyperfocalDistance}</li>
957      * <li>{@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}</li>
958      * <li>{@link CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION android.lens.info.focusDistanceCalibration}</li>
959      * <li>{@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation}</li>
960      * <li>{@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation}</li>
961      * <li>{@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration}</li>
962      * <li>{@link CameraCharacteristics#LENS_POSE_REFERENCE android.lens.poseReference}</li>
963      * <li>{@link CameraCharacteristics#LENS_DISTORTION android.lens.distortion}</li>
964      * </ul>
965      * <p>The field of view of non-RAW physical streams must not be smaller than that of the
966      * non-RAW logical streams, or the maximum field-of-view of the physical camera,
967      * whichever is smaller. The application should check the physical capture result
968      * metadata for how the physical streams are cropped or zoomed. More specifically, given
969      * the physical camera result metadata, the effective horizontal field-of-view of the
970      * physical camera is:</p>
971      * <pre><code>fov = 2 * atan2(cropW * sensorW / (2 * zoomRatio * activeArrayW), focalLength)
972      * </code></pre>
973      * <p>where the equation parameters are the physical camera's crop region width, physical
974      * sensor width, zoom ratio, active array width, and focal length respectively. Typically
975      * the physical stream of active physical camera has the same field-of-view as the
976      * logical streams. However, the same may not be true for physical streams from
977      * non-active physical cameras. For example, if the logical camera has a wide-ultrawide
978      * configuration where the wide lens is the default, when the crop region is set to the
979      * logical camera's active array size, (and the zoom ratio set to 1.0 starting from
980      * Android 11), a physical stream for the ultrawide camera may prefer outputing images
981      * with larger field-of-view than that of the wide camera for better stereo matching
982      * margin or more robust motion tracking. At the same time, the physical non-RAW streams'
983      * field of view must not be smaller than the requested crop region and zoom ratio, as
984      * long as it's within the physical lens' capability. For example, for a logical camera
985      * with wide-tele lens configuration where the wide lens is the default, if the logical
986      * camera's crop region is set to maximum size, and zoom ratio set to 1.0, the physical
987      * stream for the tele lens will be configured to its maximum size crop region (no zoom).</p>
988      * <p><em>Deprecated:</em> Prior to Android 11, the field of view of all non-RAW physical streams
989      * cannot be larger than that of non-RAW logical streams. If the logical camera has a
990      * wide-ultrawide lens configuration where the wide lens is the default, when the logical
991      * camera's crop region is set to maximum size, the FOV of the physical streams for the
992      * ultrawide lens will be the same as the logical stream, by making the crop region
993      * smaller than its active array size to compensate for the smaller focal length.</p>
994      * <p>There are two ways for the application to capture RAW images from a logical camera
995      * with RAW capability:</p>
996      * <ul>
997      * <li>Because the underlying physical cameras may have different RAW capabilities (such
998      * as resolution or CFA pattern), to maintain backward compatibility, when a RAW stream
999      * is configured, the camera device makes sure the default active physical camera remains
1000      * active and does not switch to other physical cameras. (One exception is that, if the
1001      * logical camera consists of identical image sensors and advertises multiple focalLength
1002      * due to different lenses, the camera device may generate RAW images from different
1003      * physical cameras based on the focalLength being set by the application.) This
1004      * backward-compatible approach usually results in loss of optical zoom, to telephoto
1005      * lens or to ultrawide lens.</li>
1006      * <li>Alternatively, to take advantage of the full zoomRatio range of the logical camera,
1007      * the application should use {@link android.hardware.camera2.MultiResolutionImageReader }
1008      * to capture RAW images from the currently active physical camera. Because different
1009      * physical camera may have different RAW characteristics, the application needs to use
1010      * the characteristics and result metadata of the active physical camera for the
1011      * relevant RAW metadata.</li>
1012      * </ul>
1013      * <p>The capture request and result metadata tags required for backward compatible camera
1014      * functionalities will be solely based on the logical camera capability. On the other
1015      * hand, the use of manual capture controls (sensor or post-processing) with a
1016      * logical camera may result in unexpected behavior when the HAL decides to switch
1017      * between physical cameras with different characteristics under the hood. For example,
1018      * when the application manually sets exposure time and sensitivity while zooming in,
1019      * the brightness of the camera images may suddenly change because HAL switches from one
1020      * physical camera to the other.</p>
1021      *
1022      * @see CameraCharacteristics#LENS_DISTORTION
1023      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
1024      * @see CameraCharacteristics#LENS_INFO_HYPERFOCAL_DISTANCE
1025      * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
1026      * @see CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
1027      * @see CameraCharacteristics#LENS_POSE_REFERENCE
1028      * @see CameraCharacteristics#LENS_POSE_ROTATION
1029      * @see CameraCharacteristics#LENS_POSE_TRANSLATION
1030      * @see CaptureResult#LOGICAL_MULTI_CAMERA_ACTIVE_PHYSICAL_ID
1031      * @see CameraCharacteristics#LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE
1032      * @see CameraCharacteristics#SENSOR_AVAILABLE_TEST_PATTERN_MODES
1033      * @see CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN
1034      * @see CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM1
1035      * @see CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM2
1036      * @see CameraCharacteristics#SENSOR_COLOR_TRANSFORM1
1037      * @see CameraCharacteristics#SENSOR_COLOR_TRANSFORM2
1038      * @see CameraCharacteristics#SENSOR_FORWARD_MATRIX1
1039      * @see CameraCharacteristics#SENSOR_FORWARD_MATRIX2
1040      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1041      * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
1042      * @see CameraCharacteristics#SENSOR_INFO_LENS_SHADING_APPLIED
1043      * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
1044      * @see CameraCharacteristics#SENSOR_INFO_PHYSICAL_SIZE
1045      * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
1046      * @see CameraCharacteristics#SENSOR_INFO_WHITE_LEVEL
1047      * @see CameraCharacteristics#SENSOR_MAX_ANALOG_SENSITIVITY
1048      * @see CameraCharacteristics#SENSOR_OPTICAL_BLACK_REGIONS
1049      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1050      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2
1051      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1052      */
1053     public static final int REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA = 11;
1054 
1055     /**
1056      * <p>The camera device is a monochrome camera that doesn't contain a color filter array,
1057      * and for YUV_420_888 stream, the pixel values on U and V planes are all 128.</p>
1058      * <p>A MONOCHROME camera must support the guaranteed stream combinations required for
1059      * its device level and capabilities. Additionally, if the monochrome camera device
1060      * supports Y8 format, all mandatory stream combination requirements related to {@link android.graphics.ImageFormat#YUV_420_888 YUV_420_888} apply
1061      * to {@link android.graphics.ImageFormat#Y8 Y8} as well. There are no
1062      * mandatory stream combination requirements with regard to
1063      * {@link android.graphics.ImageFormat#Y8 Y8} for Bayer camera devices.</p>
1064      * <p>Starting from Android Q, the SENSOR_INFO_COLOR_FILTER_ARRANGEMENT of a MONOCHROME
1065      * camera will be either MONO or NIR.</p>
1066      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1067      */
1068     public static final int REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME = 12;
1069 
1070     /**
1071      * <p>The camera device is capable of writing image data into a region of memory
1072      * inaccessible to Android userspace or the Android kernel, and only accessible to
1073      * trusted execution environments (TEE).</p>
1074      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1075      */
1076     public static final int REQUEST_AVAILABLE_CAPABILITIES_SECURE_IMAGE_DATA = 13;
1077 
1078     /**
1079      * <p>The camera device is only accessible by Android's system components and privileged
1080      * applications. Processes need to have the android.permission.SYSTEM_CAMERA in
1081      * addition to android.permission.CAMERA in order to connect to this camera device.</p>
1082      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1083      */
1084     public static final int REQUEST_AVAILABLE_CAPABILITIES_SYSTEM_CAMERA = 14;
1085 
1086     /**
1087      * <p>The camera device supports the OFFLINE_PROCESSING use case.</p>
1088      * <p>With OFFLINE_PROCESSING capability, the application can switch an ongoing
1089      * capture session to offline mode by calling the
1090      * CameraCaptureSession#switchToOffline method and specify streams to be kept in offline
1091      * mode. The camera will then stop currently active repeating requests, prepare for
1092      * some requests to go into offline mode, and return an offline session object. After
1093      * the switchToOffline call returns, the original capture session is in closed state as
1094      * if the CameraCaptureSession#close method has been called.
1095      * In the offline mode, all inflight requests will continue to be processed in the
1096      * background, and the application can immediately close the camera or create a new
1097      * capture session without losing those requests' output images and capture results.</p>
1098      * <p>While the camera device is processing offline requests, it
1099      * might not be able to support all stream configurations it can support
1100      * without offline requests. When that happens, the createCaptureSession
1101      * method call will fail. The following stream configurations are guaranteed to work
1102      * without hitting the resource busy exception:</p>
1103      * <ul>
1104      * <li>One ongoing offline session: target one output surface of YUV or
1105      * JPEG format, any resolution.</li>
1106      * <li>The active camera capture session:<ol>
1107      * <li>One preview surface (SurfaceView or SurfaceTexture) up to 1920 width</li>
1108      * <li>One YUV ImageReader surface up to 1920 width</li>
1109      * <li>One Jpeg ImageReader, any resolution: the camera device is
1110      *    allowed to slow down JPEG output speed by 50% if there is any ongoing offline
1111      *    session.</li>
1112      * <li>If the device supports PRIVATE_REPROCESSING, one pair of ImageWriter/ImageReader
1113      *    surfaces of private format, with the same resolution that is larger or equal to
1114      *    the JPEG ImageReader resolution above.</li>
1115      * </ol>
1116      * </li>
1117      * <li>Alternatively, the active camera session above can be replaced by an legacy
1118      * {@link android.hardware.Camera Camera} with the following parameter settings:<ol>
1119      * <li>Preview size up to 1920 width</li>
1120      * <li>Preview callback size up to 1920 width</li>
1121      * <li>Video size up to 1920 width</li>
1122      * <li>Picture size, any resolution: the camera device is
1123      *     allowed to slow down JPEG output speed by 50% if there is any ongoing offline
1124      *     session.</li>
1125      * </ol>
1126      * </li>
1127      * </ul>
1128      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1129      */
1130     public static final int REQUEST_AVAILABLE_CAPABILITIES_OFFLINE_PROCESSING = 15;
1131 
1132     /**
1133      * <p>This camera device is capable of producing ultra high resolution images in
1134      * addition to the image sizes described in the
1135      * {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap}.
1136      * It can operate in 'default' mode and 'max resolution' mode. It generally does this
1137      * by binning pixels in 'default' mode and not binning them in 'max resolution' mode.
1138      * <code>{@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap}</code> describes the streams supported in 'default'
1139      * mode.
1140      * The stream configurations supported in 'max resolution' mode are described by
1141      * <code>{@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION android.scaler.streamConfigurationMapMaximumResolution}</code>.
1142      * The maximum resolution mode pixel array size of a camera device
1143      * (<code>{@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}</code>) with this capability,
1144      * will be at least 24 megapixels.</p>
1145      *
1146      * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
1147      * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION
1148      * @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
1149      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1150      */
1151     public static final int REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR = 16;
1152 
1153     /**
1154      * <p>The device supports reprocessing from the <code>RAW_SENSOR</code> format with a bayer pattern
1155      * given by {@link CameraCharacteristics#SENSOR_INFO_BINNING_FACTOR android.sensor.info.binningFactor} (m x n group of pixels with the same
1156      * color filter) to a remosaiced regular bayer pattern.</p>
1157      * <p>This capability will only be present for devices with
1158      * {@link android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR }
1159      * capability. When
1160      * {@link android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR }
1161      * devices do not advertise this capability,
1162      * {@link android.graphics.ImageFormat#RAW_SENSOR } images will already have a
1163      * regular bayer pattern.</p>
1164      * <p>If a <code>RAW_SENSOR</code> stream is requested along with another non-RAW stream in a
1165      * {@link android.hardware.camera2.CaptureRequest } (if multiple streams are supported
1166      * when {@link CaptureRequest#SENSOR_PIXEL_MODE android.sensor.pixelMode} is set to
1167      * {@link android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION }),
1168      * the <code>RAW_SENSOR</code> stream will have a regular bayer pattern.</p>
1169      * <p>This capability requires the camera device to support the following :
1170      * * The {@link android.hardware.camera2.params.StreamConfigurationMap } mentioned below
1171      *   refers to the one, described by
1172      *   <code>{@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION android.scaler.streamConfigurationMapMaximumResolution}</code>.
1173      * * One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.
1174      * * {@link android.graphics.ImageFormat#RAW_SENSOR } is supported as an output/input
1175      *   format, that is, {@link android.graphics.ImageFormat#RAW_SENSOR } is included in the
1176      *   lists of formats returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats } and {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats }.
1177      * * {@link android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput }
1178      *   returns non-empty int[] for each supported input format returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats }.
1179      * * Each size returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputSizes getInputSizes(ImageFormat.RAW_SENSOR)} is also included in {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes getOutputSizes(ImageFormat.RAW_SENSOR)}
1180      * * Using {@link android.graphics.ImageFormat#RAW_SENSOR } does not cause a frame rate
1181      *   drop relative to the sensor's maximum capture rate (at that resolution).
1182      * * No CaptureRequest controls will be applicable when a request has an input target
1183      *   with {@link android.graphics.ImageFormat#RAW_SENSOR } format.</p>
1184      *
1185      * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
1186      * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION
1187      * @see CameraCharacteristics#SENSOR_INFO_BINNING_FACTOR
1188      * @see CaptureRequest#SENSOR_PIXEL_MODE
1189      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1190      */
1191     public static final int REQUEST_AVAILABLE_CAPABILITIES_REMOSAIC_REPROCESSING = 17;
1192 
1193     //
1194     // Enumeration values for CameraCharacteristics#SCALER_CROPPING_TYPE
1195     //
1196 
1197     /**
1198      * <p>The camera device only supports centered crop regions.</p>
1199      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
1200      */
1201     public static final int SCALER_CROPPING_TYPE_CENTER_ONLY = 0;
1202 
1203     /**
1204      * <p>The camera device supports arbitrarily chosen crop regions.</p>
1205      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
1206      */
1207     public static final int SCALER_CROPPING_TYPE_FREEFORM = 1;
1208 
1209     //
1210     // Enumeration values for CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1211     //
1212 
1213     /**
1214      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1215      */
1216     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB = 0;
1217 
1218     /**
1219      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1220      */
1221     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG = 1;
1222 
1223     /**
1224      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1225      */
1226     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG = 2;
1227 
1228     /**
1229      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1230      */
1231     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR = 3;
1232 
1233     /**
1234      * <p>Sensor is not Bayer; output has 3 16-bit
1235      * values for each pixel, instead of just 1 16-bit value
1236      * per pixel.</p>
1237      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1238      */
1239     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB = 4;
1240 
1241     /**
1242      * <p>Sensor doesn't have any Bayer color filter.
1243      * Such sensor captures visible light in monochrome. The exact weighting and
1244      * wavelengths captured is not specified, but generally only includes the visible
1245      * frequencies. This value implies a MONOCHROME camera.</p>
1246      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1247      */
1248     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_MONO = 5;
1249 
1250     /**
1251      * <p>Sensor has a near infrared filter capturing light with wavelength between
1252      * roughly 750nm and 1400nm, and the same filter covers the whole sensor array. This
1253      * value implies a MONOCHROME camera.</p>
1254      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1255      */
1256     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_NIR = 6;
1257 
1258     //
1259     // Enumeration values for CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
1260     //
1261 
1262     /**
1263      * <p>Timestamps from {@link CaptureResult#SENSOR_TIMESTAMP android.sensor.timestamp} are in nanoseconds and monotonic, but can
1264      * not be compared to timestamps from other subsystems (e.g. accelerometer, gyro etc.),
1265      * or other instances of the same or different camera devices in the same system with
1266      * accuracy. However, the timestamps are roughly in the same timebase as
1267      * {@link android.os.SystemClock#uptimeMillis }.  The accuracy is sufficient for tasks
1268      * like A/V synchronization for video recording, at least, and the timestamps can be
1269      * directly used together with timestamps from the audio subsystem for that task.</p>
1270      * <p>Timestamps between streams and results for a single camera instance are comparable,
1271      * and the timestamps for all buffers and the result metadata generated by a single
1272      * capture are identical.</p>
1273      *
1274      * @see CaptureResult#SENSOR_TIMESTAMP
1275      * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
1276      */
1277     public static final int SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN = 0;
1278 
1279     /**
1280      * <p>Timestamps from {@link CaptureResult#SENSOR_TIMESTAMP android.sensor.timestamp} are in the same timebase as
1281      * {@link android.os.SystemClock#elapsedRealtimeNanos },
1282      * and they can be compared to other timestamps using that base.</p>
1283      * <p>When buffers from a REALTIME device are passed directly to a video encoder from the
1284      * camera, automatic compensation is done to account for differing timebases of the
1285      * audio and camera subsystems.  If the application is receiving buffers and then later
1286      * sending them to a video encoder or other application where they are compared with
1287      * audio subsystem timestamps or similar, this compensation is not present.  In those
1288      * cases, applications need to adjust the timestamps themselves.  Since {@link android.os.SystemClock#elapsedRealtimeNanos } and {@link android.os.SystemClock#uptimeMillis } only diverge while the device is asleep, an
1289      * offset between the two sources can be measured once per active session and applied
1290      * to timestamps for sufficient accuracy for A/V sync.</p>
1291      *
1292      * @see CaptureResult#SENSOR_TIMESTAMP
1293      * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
1294      */
1295     public static final int SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME = 1;
1296 
1297     //
1298     // Enumeration values for CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1299     //
1300 
1301     /**
1302      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1303      */
1304     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT = 1;
1305 
1306     /**
1307      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1308      */
1309     public static final int SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT = 2;
1310 
1311     /**
1312      * <p>Incandescent light</p>
1313      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1314      */
1315     public static final int SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN = 3;
1316 
1317     /**
1318      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1319      */
1320     public static final int SENSOR_REFERENCE_ILLUMINANT1_FLASH = 4;
1321 
1322     /**
1323      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1324      */
1325     public static final int SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER = 9;
1326 
1327     /**
1328      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1329      */
1330     public static final int SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER = 10;
1331 
1332     /**
1333      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1334      */
1335     public static final int SENSOR_REFERENCE_ILLUMINANT1_SHADE = 11;
1336 
1337     /**
1338      * <p>D 5700 - 7100K</p>
1339      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1340      */
1341     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT = 12;
1342 
1343     /**
1344      * <p>N 4600 - 5400K</p>
1345      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1346      */
1347     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT = 13;
1348 
1349     /**
1350      * <p>W 3900 - 4500K</p>
1351      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1352      */
1353     public static final int SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT = 14;
1354 
1355     /**
1356      * <p>WW 3200 - 3700K</p>
1357      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1358      */
1359     public static final int SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT = 15;
1360 
1361     /**
1362      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1363      */
1364     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A = 17;
1365 
1366     /**
1367      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1368      */
1369     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B = 18;
1370 
1371     /**
1372      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1373      */
1374     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C = 19;
1375 
1376     /**
1377      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1378      */
1379     public static final int SENSOR_REFERENCE_ILLUMINANT1_D55 = 20;
1380 
1381     /**
1382      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1383      */
1384     public static final int SENSOR_REFERENCE_ILLUMINANT1_D65 = 21;
1385 
1386     /**
1387      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1388      */
1389     public static final int SENSOR_REFERENCE_ILLUMINANT1_D75 = 22;
1390 
1391     /**
1392      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1393      */
1394     public static final int SENSOR_REFERENCE_ILLUMINANT1_D50 = 23;
1395 
1396     /**
1397      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
1398      */
1399     public static final int SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN = 24;
1400 
1401     //
1402     // Enumeration values for CameraCharacteristics#LED_AVAILABLE_LEDS
1403     //
1404 
1405     /**
1406      * <p>android.led.transmit control is used.</p>
1407      * @see CameraCharacteristics#LED_AVAILABLE_LEDS
1408      * @hide
1409      */
1410     public static final int LED_AVAILABLE_LEDS_TRANSMIT = 0;
1411 
1412     //
1413     // Enumeration values for CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1414     //
1415 
1416     /**
1417      * <p>This camera device does not have enough capabilities to qualify as a <code>FULL</code> device or
1418      * better.</p>
1419      * <p>Only the stream configurations listed in the <code>LEGACY</code> and <code>LIMITED</code> tables in the
1420      * {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession} documentation are guaranteed to be supported.</p>
1421      * <p>All <code>LIMITED</code> devices support the <code>BACKWARDS_COMPATIBLE</code> capability, indicating basic
1422      * support for color image capture. The only exception is that the device may
1423      * alternatively support only the <code>DEPTH_OUTPUT</code> capability, if it can only output depth
1424      * measurements and not color images.</p>
1425      * <p><code>LIMITED</code> devices and above require the use of {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}
1426      * to lock exposure metering (and calculate flash power, for cameras with flash) before
1427      * capturing a high-quality still image.</p>
1428      * <p>A <code>LIMITED</code> device that only lists the <code>BACKWARDS_COMPATIBLE</code> capability is only
1429      * required to support full-automatic operation and post-processing (<code>OFF</code> is not
1430      * supported for {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}, {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}, or
1431      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode})</p>
1432      * <p>Additional capabilities may optionally be supported by a <code>LIMITED</code>-level device, and
1433      * can be checked for in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}.</p>
1434      *
1435      * @see CaptureRequest#CONTROL_AE_MODE
1436      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1437      * @see CaptureRequest#CONTROL_AF_MODE
1438      * @see CaptureRequest#CONTROL_AWB_MODE
1439      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1440      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1441      */
1442     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED = 0;
1443 
1444     /**
1445      * <p>This camera device is capable of supporting advanced imaging applications.</p>
1446      * <p>The stream configurations listed in the <code>FULL</code>, <code>LEGACY</code> and <code>LIMITED</code> tables in the
1447      * {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession} documentation are guaranteed to be supported.</p>
1448      * <p>A <code>FULL</code> device will support below capabilities:</p>
1449      * <ul>
1450      * <li><code>BURST_CAPTURE</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1451      *   <code>BURST_CAPTURE</code>)</li>
1452      * <li>Per frame control ({@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} <code>==</code> PER_FRAME_CONTROL)</li>
1453      * <li>Manual sensor control ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains <code>MANUAL_SENSOR</code>)</li>
1454      * <li>Manual post-processing control ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1455      *   <code>MANUAL_POST_PROCESSING</code>)</li>
1456      * <li>The required exposure time range defined in {@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</li>
1457      * <li>The required maxFrameDuration defined in {@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration}</li>
1458      * </ul>
1459      * <p>Note:
1460      * Pre-API level 23, FULL devices also supported arbitrary cropping region
1461      * ({@link CameraCharacteristics#SCALER_CROPPING_TYPE android.scaler.croppingType} <code>== FREEFORM</code>); this requirement was relaxed in API level
1462      * 23, and <code>FULL</code> devices may only support <code>CENTERED</code> cropping.</p>
1463      *
1464      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1465      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
1466      * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
1467      * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
1468      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1469      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1470      */
1471     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_FULL = 1;
1472 
1473     /**
1474      * <p>This camera device is running in backward compatibility mode.</p>
1475      * <p>Only the stream configurations listed in the <code>LEGACY</code> table in the {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession} documentation are supported.</p>
1476      * <p>A <code>LEGACY</code> device does not support per-frame control, manual sensor control, manual
1477      * post-processing, arbitrary cropping regions, and has relaxed performance constraints.
1478      * No additional capabilities beyond <code>BACKWARD_COMPATIBLE</code> will ever be listed by a
1479      * <code>LEGACY</code> device in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}.</p>
1480      * <p>In addition, the {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is not functional on <code>LEGACY</code>
1481      * devices. Instead, every request that includes a JPEG-format output target is treated
1482      * as triggering a still capture, internally executing a precapture trigger.  This may
1483      * fire the flash for flash power metering during precapture, and then fire the flash
1484      * for the final capture, if a flash is available on the device and the AE mode is set to
1485      * enable the flash.</p>
1486      * <p>Devices that initially shipped with Android version {@link android.os.Build.VERSION_CODES#Q Q} or newer will not include any LEGACY-level devices.</p>
1487      *
1488      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1489      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1490      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1491      */
1492     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY = 2;
1493 
1494     /**
1495      * <p>This camera device is capable of YUV reprocessing and RAW data capture, in addition to
1496      * FULL-level capabilities.</p>
1497      * <p>The stream configurations listed in the <code>LEVEL_3</code>, <code>RAW</code>, <code>FULL</code>, <code>LEGACY</code> and
1498      * <code>LIMITED</code> tables in the {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession} documentation are guaranteed to be supported.</p>
1499      * <p>The following additional capabilities are guaranteed to be supported:</p>
1500      * <ul>
1501      * <li><code>YUV_REPROCESSING</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1502      *   <code>YUV_REPROCESSING</code>)</li>
1503      * <li><code>RAW</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1504      *   <code>RAW</code>)</li>
1505      * </ul>
1506      *
1507      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1508      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1509      */
1510     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_3 = 3;
1511 
1512     /**
1513      * <p>This camera device is backed by an external camera connected to this Android device.</p>
1514      * <p>The device has capability identical to a LIMITED level device, with the following
1515      * exceptions:</p>
1516      * <ul>
1517      * <li>The device may not report lens/sensor related information such as<ul>
1518      * <li>{@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}</li>
1519      * <li>{@link CameraCharacteristics#LENS_INFO_HYPERFOCAL_DISTANCE android.lens.info.hyperfocalDistance}</li>
1520      * <li>{@link CameraCharacteristics#SENSOR_INFO_PHYSICAL_SIZE android.sensor.info.physicalSize}</li>
1521      * <li>{@link CameraCharacteristics#SENSOR_INFO_WHITE_LEVEL android.sensor.info.whiteLevel}</li>
1522      * <li>{@link CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN android.sensor.blackLevelPattern}</li>
1523      * <li>{@link CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT android.sensor.info.colorFilterArrangement}</li>
1524      * <li>{@link CaptureResult#SENSOR_ROLLING_SHUTTER_SKEW android.sensor.rollingShutterSkew}</li>
1525      * </ul>
1526      * </li>
1527      * <li>The device will report 0 for {@link CameraCharacteristics#SENSOR_ORIENTATION android.sensor.orientation}</li>
1528      * <li>The device has less guarantee on stable framerate, as the framerate partly depends
1529      *   on the external camera being used.</li>
1530      * </ul>
1531      *
1532      * @see CaptureRequest#LENS_FOCAL_LENGTH
1533      * @see CameraCharacteristics#LENS_INFO_HYPERFOCAL_DISTANCE
1534      * @see CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN
1535      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
1536      * @see CameraCharacteristics#SENSOR_INFO_PHYSICAL_SIZE
1537      * @see CameraCharacteristics#SENSOR_INFO_WHITE_LEVEL
1538      * @see CameraCharacteristics#SENSOR_ORIENTATION
1539      * @see CaptureResult#SENSOR_ROLLING_SHUTTER_SKEW
1540      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1541      */
1542     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL = 4;
1543 
1544     //
1545     // Enumeration values for CameraCharacteristics#SYNC_MAX_LATENCY
1546     //
1547 
1548     /**
1549      * <p>Every frame has the requests immediately applied.</p>
1550      * <p>Changing controls over multiple requests one after another will
1551      * produce results that have those controls applied atomically
1552      * each frame.</p>
1553      * <p>All FULL capability devices will have this as their maxLatency.</p>
1554      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1555      */
1556     public static final int SYNC_MAX_LATENCY_PER_FRAME_CONTROL = 0;
1557 
1558     /**
1559      * <p>Each new frame has some subset (potentially the entire set)
1560      * of the past requests applied to the camera settings.</p>
1561      * <p>By submitting a series of identical requests, the camera device
1562      * will eventually have the camera settings applied, but it is
1563      * unknown when that exact point will be.</p>
1564      * <p>All LEGACY capability devices will have this as their maxLatency.</p>
1565      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1566      */
1567     public static final int SYNC_MAX_LATENCY_UNKNOWN = -1;
1568 
1569     //
1570     // Enumeration values for CameraCharacteristics#LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE
1571     //
1572 
1573     /**
1574      * <p>A software mechanism is used to synchronize between the physical cameras. As a result,
1575      * the timestamp of an image from a physical stream is only an approximation of the
1576      * image sensor start-of-exposure time.</p>
1577      * @see CameraCharacteristics#LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE
1578      */
1579     public static final int LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_APPROXIMATE = 0;
1580 
1581     /**
1582      * <p>The camera device supports frame timestamp synchronization at the hardware level,
1583      * and the timestamp of a physical stream image accurately reflects its
1584      * start-of-exposure time.</p>
1585      * @see CameraCharacteristics#LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE
1586      */
1587     public static final int LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_CALIBRATED = 1;
1588 
1589     //
1590     // Enumeration values for CaptureRequest#COLOR_CORRECTION_MODE
1591     //
1592 
1593     /**
1594      * <p>Use the {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} matrix
1595      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} to do color conversion.</p>
1596      * <p>All advanced white balance adjustments (not specified
1597      * by our white balance pipeline) must be disabled.</p>
1598      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1599      * TRANSFORM_MATRIX is ignored. The camera device will override
1600      * this value to either FAST or HIGH_QUALITY.</p>
1601      *
1602      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1603      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1604      * @see CaptureRequest#CONTROL_AWB_MODE
1605      * @see CaptureRequest#COLOR_CORRECTION_MODE
1606      */
1607     public static final int COLOR_CORRECTION_MODE_TRANSFORM_MATRIX = 0;
1608 
1609     /**
1610      * <p>Color correction processing must not slow down
1611      * capture rate relative to sensor raw output.</p>
1612      * <p>Advanced white balance adjustments above and beyond
1613      * the specified white balance pipeline may be applied.</p>
1614      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1615      * the camera device uses the last frame's AWB values
1616      * (or defaults if AWB has never been run).</p>
1617      *
1618      * @see CaptureRequest#CONTROL_AWB_MODE
1619      * @see CaptureRequest#COLOR_CORRECTION_MODE
1620      */
1621     public static final int COLOR_CORRECTION_MODE_FAST = 1;
1622 
1623     /**
1624      * <p>Color correction processing operates at improved
1625      * quality but the capture rate might be reduced (relative to sensor
1626      * raw output rate)</p>
1627      * <p>Advanced white balance adjustments above and beyond
1628      * the specified white balance pipeline may be applied.</p>
1629      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1630      * the camera device uses the last frame's AWB values
1631      * (or defaults if AWB has never been run).</p>
1632      *
1633      * @see CaptureRequest#CONTROL_AWB_MODE
1634      * @see CaptureRequest#COLOR_CORRECTION_MODE
1635      */
1636     public static final int COLOR_CORRECTION_MODE_HIGH_QUALITY = 2;
1637 
1638     //
1639     // Enumeration values for CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1640     //
1641 
1642     /**
1643      * <p>No aberration correction is applied.</p>
1644      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1645      */
1646     public static final int COLOR_CORRECTION_ABERRATION_MODE_OFF = 0;
1647 
1648     /**
1649      * <p>Aberration correction will not slow down capture rate
1650      * relative to sensor raw output.</p>
1651      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1652      */
1653     public static final int COLOR_CORRECTION_ABERRATION_MODE_FAST = 1;
1654 
1655     /**
1656      * <p>Aberration correction operates at improved quality but the capture rate might be
1657      * reduced (relative to sensor raw output rate)</p>
1658      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1659      */
1660     public static final int COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY = 2;
1661 
1662     //
1663     // Enumeration values for CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1664     //
1665 
1666     /**
1667      * <p>The camera device will not adjust exposure duration to
1668      * avoid banding problems.</p>
1669      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1670      */
1671     public static final int CONTROL_AE_ANTIBANDING_MODE_OFF = 0;
1672 
1673     /**
1674      * <p>The camera device will adjust exposure duration to
1675      * avoid banding problems with 50Hz illumination sources.</p>
1676      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1677      */
1678     public static final int CONTROL_AE_ANTIBANDING_MODE_50HZ = 1;
1679 
1680     /**
1681      * <p>The camera device will adjust exposure duration to
1682      * avoid banding problems with 60Hz illumination
1683      * sources.</p>
1684      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1685      */
1686     public static final int CONTROL_AE_ANTIBANDING_MODE_60HZ = 2;
1687 
1688     /**
1689      * <p>The camera device will automatically adapt its
1690      * antibanding routine to the current illumination
1691      * condition. This is the default mode if AUTO is
1692      * available on given camera device.</p>
1693      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1694      */
1695     public static final int CONTROL_AE_ANTIBANDING_MODE_AUTO = 3;
1696 
1697     //
1698     // Enumeration values for CaptureRequest#CONTROL_AE_MODE
1699     //
1700 
1701     /**
1702      * <p>The camera device's autoexposure routine is disabled.</p>
1703      * <p>The application-selected {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
1704      * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity} and
1705      * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} are used by the camera
1706      * device, along with android.flash.* fields, if there's
1707      * a flash unit for this camera device.</p>
1708      * <p>Note that auto-white balance (AWB) and auto-focus (AF)
1709      * behavior is device dependent when AE is in OFF mode.
1710      * To have consistent behavior across different devices,
1711      * it is recommended to either set AWB and AF to OFF mode
1712      * or lock AWB and AF before setting AE to OFF.
1713      * See {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode},
1714      * {@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}, and {@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}
1715      * for more details.</p>
1716      * <p>LEGACY devices do not support the OFF mode and will
1717      * override attempts to use this value to ON.</p>
1718      *
1719      * @see CaptureRequest#CONTROL_AF_MODE
1720      * @see CaptureRequest#CONTROL_AF_TRIGGER
1721      * @see CaptureRequest#CONTROL_AWB_LOCK
1722      * @see CaptureRequest#CONTROL_AWB_MODE
1723      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1724      * @see CaptureRequest#SENSOR_FRAME_DURATION
1725      * @see CaptureRequest#SENSOR_SENSITIVITY
1726      * @see CaptureRequest#CONTROL_AE_MODE
1727      */
1728     public static final int CONTROL_AE_MODE_OFF = 0;
1729 
1730     /**
1731      * <p>The camera device's autoexposure routine is active,
1732      * with no flash control.</p>
1733      * <p>The application's values for
1734      * {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
1735      * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and
1736      * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} are ignored. The
1737      * application has control over the various
1738      * android.flash.* fields.</p>
1739      *
1740      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1741      * @see CaptureRequest#SENSOR_FRAME_DURATION
1742      * @see CaptureRequest#SENSOR_SENSITIVITY
1743      * @see CaptureRequest#CONTROL_AE_MODE
1744      */
1745     public static final int CONTROL_AE_MODE_ON = 1;
1746 
1747     /**
1748      * <p>Like ON, except that the camera device also controls
1749      * the camera's flash unit, firing it in low-light
1750      * conditions.</p>
1751      * <p>The flash may be fired during a precapture sequence
1752      * (triggered by {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) and
1753      * may be fired for captures for which the
1754      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} field is set to
1755      * STILL_CAPTURE</p>
1756      *
1757      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1758      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1759      * @see CaptureRequest#CONTROL_AE_MODE
1760      */
1761     public static final int CONTROL_AE_MODE_ON_AUTO_FLASH = 2;
1762 
1763     /**
1764      * <p>Like ON, except that the camera device also controls
1765      * the camera's flash unit, always firing it for still
1766      * captures.</p>
1767      * <p>The flash may be fired during a precapture sequence
1768      * (triggered by {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) and
1769      * will always be fired for captures for which the
1770      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} field is set to
1771      * STILL_CAPTURE</p>
1772      *
1773      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1774      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1775      * @see CaptureRequest#CONTROL_AE_MODE
1776      */
1777     public static final int CONTROL_AE_MODE_ON_ALWAYS_FLASH = 3;
1778 
1779     /**
1780      * <p>Like ON_AUTO_FLASH, but with automatic red eye
1781      * reduction.</p>
1782      * <p>If deemed necessary by the camera device, a red eye
1783      * reduction flash will fire during the precapture
1784      * sequence.</p>
1785      * @see CaptureRequest#CONTROL_AE_MODE
1786      */
1787     public static final int CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE = 4;
1788 
1789     /**
1790      * <p>An external flash has been turned on.</p>
1791      * <p>It informs the camera device that an external flash has been turned on, and that
1792      * metering (and continuous focus if active) should be quickly recaculated to account
1793      * for the external flash. Otherwise, this mode acts like ON.</p>
1794      * <p>When the external flash is turned off, AE mode should be changed to one of the
1795      * other available AE modes.</p>
1796      * <p>If the camera device supports AE external flash mode, {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} must
1797      * be FLASH_REQUIRED after the camera device finishes AE scan and it's too dark without
1798      * flash.</p>
1799      *
1800      * @see CaptureResult#CONTROL_AE_STATE
1801      * @see CaptureRequest#CONTROL_AE_MODE
1802      */
1803     public static final int CONTROL_AE_MODE_ON_EXTERNAL_FLASH = 5;
1804 
1805     //
1806     // Enumeration values for CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1807     //
1808 
1809     /**
1810      * <p>The trigger is idle.</p>
1811      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1812      */
1813     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_IDLE = 0;
1814 
1815     /**
1816      * <p>The precapture metering sequence will be started
1817      * by the camera device.</p>
1818      * <p>The exact effect of the precapture trigger depends on
1819      * the current AE mode and state.</p>
1820      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1821      */
1822     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_START = 1;
1823 
1824     /**
1825      * <p>The camera device will cancel any currently active or completed
1826      * precapture metering sequence, the auto-exposure routine will return to its
1827      * initial state.</p>
1828      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1829      */
1830     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL = 2;
1831 
1832     //
1833     // Enumeration values for CaptureRequest#CONTROL_AF_MODE
1834     //
1835 
1836     /**
1837      * <p>The auto-focus routine does not control the lens;
1838      * {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} is controlled by the
1839      * application.</p>
1840      *
1841      * @see CaptureRequest#LENS_FOCUS_DISTANCE
1842      * @see CaptureRequest#CONTROL_AF_MODE
1843      */
1844     public static final int CONTROL_AF_MODE_OFF = 0;
1845 
1846     /**
1847      * <p>Basic automatic focus mode.</p>
1848      * <p>In this mode, the lens does not move unless
1849      * the autofocus trigger action is called. When that trigger
1850      * is activated, AF will transition to ACTIVE_SCAN, then to
1851      * the outcome of the scan (FOCUSED or NOT_FOCUSED).</p>
1852      * <p>Always supported if lens is not fixed focus.</p>
1853      * <p>Use {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} to determine if lens
1854      * is fixed-focus.</p>
1855      * <p>Triggering AF_CANCEL resets the lens position to default,
1856      * and sets the AF state to INACTIVE.</p>
1857      *
1858      * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
1859      * @see CaptureRequest#CONTROL_AF_MODE
1860      */
1861     public static final int CONTROL_AF_MODE_AUTO = 1;
1862 
1863     /**
1864      * <p>Close-up focusing mode.</p>
1865      * <p>In this mode, the lens does not move unless the
1866      * autofocus trigger action is called. When that trigger is
1867      * activated, AF will transition to ACTIVE_SCAN, then to
1868      * the outcome of the scan (FOCUSED or NOT_FOCUSED). This
1869      * mode is optimized for focusing on objects very close to
1870      * the camera.</p>
1871      * <p>When that trigger is activated, AF will transition to
1872      * ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or
1873      * NOT_FOCUSED). Triggering cancel AF resets the lens
1874      * position to default, and sets the AF state to
1875      * INACTIVE.</p>
1876      * @see CaptureRequest#CONTROL_AF_MODE
1877      */
1878     public static final int CONTROL_AF_MODE_MACRO = 2;
1879 
1880     /**
1881      * <p>In this mode, the AF algorithm modifies the lens
1882      * position continually to attempt to provide a
1883      * constantly-in-focus image stream.</p>
1884      * <p>The focusing behavior should be suitable for good quality
1885      * video recording; typically this means slower focus
1886      * movement and no overshoots. When the AF trigger is not
1887      * involved, the AF algorithm should start in INACTIVE state,
1888      * and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED
1889      * states as appropriate. When the AF trigger is activated,
1890      * the algorithm should immediately transition into
1891      * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
1892      * lens position until a cancel AF trigger is received.</p>
1893      * <p>Once cancel is received, the algorithm should transition
1894      * back to INACTIVE and resume passive scan. Note that this
1895      * behavior is not identical to CONTINUOUS_PICTURE, since an
1896      * ongoing PASSIVE_SCAN must immediately be
1897      * canceled.</p>
1898      * @see CaptureRequest#CONTROL_AF_MODE
1899      */
1900     public static final int CONTROL_AF_MODE_CONTINUOUS_VIDEO = 3;
1901 
1902     /**
1903      * <p>In this mode, the AF algorithm modifies the lens
1904      * position continually to attempt to provide a
1905      * constantly-in-focus image stream.</p>
1906      * <p>The focusing behavior should be suitable for still image
1907      * capture; typically this means focusing as fast as
1908      * possible. When the AF trigger is not involved, the AF
1909      * algorithm should start in INACTIVE state, and then
1910      * transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as
1911      * appropriate as it attempts to maintain focus. When the AF
1912      * trigger is activated, the algorithm should finish its
1913      * PASSIVE_SCAN if active, and then transition into
1914      * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
1915      * lens position until a cancel AF trigger is received.</p>
1916      * <p>When the AF cancel trigger is activated, the algorithm
1917      * should transition back to INACTIVE and then act as if it
1918      * has just been started.</p>
1919      * @see CaptureRequest#CONTROL_AF_MODE
1920      */
1921     public static final int CONTROL_AF_MODE_CONTINUOUS_PICTURE = 4;
1922 
1923     /**
1924      * <p>Extended depth of field (digital focus) mode.</p>
1925      * <p>The camera device will produce images with an extended
1926      * depth of field automatically; no special focusing
1927      * operations need to be done before taking a picture.</p>
1928      * <p>AF triggers are ignored, and the AF state will always be
1929      * INACTIVE.</p>
1930      * @see CaptureRequest#CONTROL_AF_MODE
1931      */
1932     public static final int CONTROL_AF_MODE_EDOF = 5;
1933 
1934     //
1935     // Enumeration values for CaptureRequest#CONTROL_AF_TRIGGER
1936     //
1937 
1938     /**
1939      * <p>The trigger is idle.</p>
1940      * @see CaptureRequest#CONTROL_AF_TRIGGER
1941      */
1942     public static final int CONTROL_AF_TRIGGER_IDLE = 0;
1943 
1944     /**
1945      * <p>Autofocus will trigger now.</p>
1946      * @see CaptureRequest#CONTROL_AF_TRIGGER
1947      */
1948     public static final int CONTROL_AF_TRIGGER_START = 1;
1949 
1950     /**
1951      * <p>Autofocus will return to its initial
1952      * state, and cancel any currently active trigger.</p>
1953      * @see CaptureRequest#CONTROL_AF_TRIGGER
1954      */
1955     public static final int CONTROL_AF_TRIGGER_CANCEL = 2;
1956 
1957     //
1958     // Enumeration values for CaptureRequest#CONTROL_AWB_MODE
1959     //
1960 
1961     /**
1962      * <p>The camera device's auto-white balance routine is disabled.</p>
1963      * <p>The application-selected color transform matrix
1964      * ({@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}) and gains
1965      * ({@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}) are used by the camera
1966      * device for manual white balance control.</p>
1967      *
1968      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1969      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1970      * @see CaptureRequest#CONTROL_AWB_MODE
1971      */
1972     public static final int CONTROL_AWB_MODE_OFF = 0;
1973 
1974     /**
1975      * <p>The camera device's auto-white balance routine is active.</p>
1976      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1977      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1978      * For devices that support the MANUAL_POST_PROCESSING capability, the
1979      * values used by the camera device for the transform and gains
1980      * will be available in the capture result for this request.</p>
1981      *
1982      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1983      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1984      * @see CaptureRequest#CONTROL_AWB_MODE
1985      */
1986     public static final int CONTROL_AWB_MODE_AUTO = 1;
1987 
1988     /**
1989      * <p>The camera device's auto-white balance routine is disabled;
1990      * the camera device uses incandescent light as the assumed scene
1991      * illumination for white balance.</p>
1992      * <p>While the exact white balance transforms are up to the
1993      * camera device, they will approximately match the CIE
1994      * standard illuminant A.</p>
1995      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1996      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1997      * For devices that support the MANUAL_POST_PROCESSING capability, the
1998      * values used by the camera device for the transform and gains
1999      * will be available in the capture result for this request.</p>
2000      *
2001      * @see CaptureRequest#COLOR_CORRECTION_GAINS
2002      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
2003      * @see CaptureRequest#CONTROL_AWB_MODE
2004      */
2005     public static final int CONTROL_AWB_MODE_INCANDESCENT = 2;
2006 
2007     /**
2008      * <p>The camera device's auto-white balance routine is disabled;
2009      * the camera device uses fluorescent light as the assumed scene
2010      * illumination for white balance.</p>
2011      * <p>While the exact white balance transforms are up to the
2012      * camera device, they will approximately match the CIE
2013      * standard illuminant F2.</p>
2014      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
2015      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
2016      * For devices that support the MANUAL_POST_PROCESSING capability, the
2017      * values used by the camera device for the transform and gains
2018      * will be available in the capture result for this request.</p>
2019      *
2020      * @see CaptureRequest#COLOR_CORRECTION_GAINS
2021      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
2022      * @see CaptureRequest#CONTROL_AWB_MODE
2023      */
2024     public static final int CONTROL_AWB_MODE_FLUORESCENT = 3;
2025 
2026     /**
2027      * <p>The camera device's auto-white balance routine is disabled;
2028      * the camera device uses warm fluorescent light as the assumed scene
2029      * illumination for white balance.</p>
2030      * <p>While the exact white balance transforms are up to the
2031      * camera device, they will approximately match the CIE
2032      * standard illuminant F4.</p>
2033      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
2034      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
2035      * For devices that support the MANUAL_POST_PROCESSING capability, the
2036      * values used by the camera device for the transform and gains
2037      * will be available in the capture result for this request.</p>
2038      *
2039      * @see CaptureRequest#COLOR_CORRECTION_GAINS
2040      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
2041      * @see CaptureRequest#CONTROL_AWB_MODE
2042      */
2043     public static final int CONTROL_AWB_MODE_WARM_FLUORESCENT = 4;
2044 
2045     /**
2046      * <p>The camera device's auto-white balance routine is disabled;
2047      * the camera device uses daylight light as the assumed scene
2048      * illumination for white balance.</p>
2049      * <p>While the exact white balance transforms are up to the
2050      * camera device, they will approximately match the CIE
2051      * standard illuminant D65.</p>
2052      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
2053      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
2054      * For devices that support the MANUAL_POST_PROCESSING capability, the
2055      * values used by the camera device for the transform and gains
2056      * will be available in the capture result for this request.</p>
2057      *
2058      * @see CaptureRequest#COLOR_CORRECTION_GAINS
2059      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
2060      * @see CaptureRequest#CONTROL_AWB_MODE
2061      */
2062     public static final int CONTROL_AWB_MODE_DAYLIGHT = 5;
2063 
2064     /**
2065      * <p>The camera device's auto-white balance routine is disabled;
2066      * the camera device uses cloudy daylight light as the assumed scene
2067      * illumination for white balance.</p>
2068      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
2069      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
2070      * For devices that support the MANUAL_POST_PROCESSING capability, the
2071      * values used by the camera device for the transform and gains
2072      * will be available in the capture result for this request.</p>
2073      *
2074      * @see CaptureRequest#COLOR_CORRECTION_GAINS
2075      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
2076      * @see CaptureRequest#CONTROL_AWB_MODE
2077      */
2078     public static final int CONTROL_AWB_MODE_CLOUDY_DAYLIGHT = 6;
2079 
2080     /**
2081      * <p>The camera device's auto-white balance routine is disabled;
2082      * the camera device uses twilight light as the assumed scene
2083      * illumination for white balance.</p>
2084      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
2085      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
2086      * For devices that support the MANUAL_POST_PROCESSING capability, the
2087      * values used by the camera device for the transform and gains
2088      * will be available in the capture result for this request.</p>
2089      *
2090      * @see CaptureRequest#COLOR_CORRECTION_GAINS
2091      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
2092      * @see CaptureRequest#CONTROL_AWB_MODE
2093      */
2094     public static final int CONTROL_AWB_MODE_TWILIGHT = 7;
2095 
2096     /**
2097      * <p>The camera device's auto-white balance routine is disabled;
2098      * the camera device uses shade light as the assumed scene
2099      * illumination for white balance.</p>
2100      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
2101      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
2102      * For devices that support the MANUAL_POST_PROCESSING capability, the
2103      * values used by the camera device for the transform and gains
2104      * will be available in the capture result for this request.</p>
2105      *
2106      * @see CaptureRequest#COLOR_CORRECTION_GAINS
2107      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
2108      * @see CaptureRequest#CONTROL_AWB_MODE
2109      */
2110     public static final int CONTROL_AWB_MODE_SHADE = 8;
2111 
2112     //
2113     // Enumeration values for CaptureRequest#CONTROL_CAPTURE_INTENT
2114     //
2115 
2116     /**
2117      * <p>The goal of this request doesn't fall into the other
2118      * categories. The camera device will default to preview-like
2119      * behavior.</p>
2120      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2121      */
2122     public static final int CONTROL_CAPTURE_INTENT_CUSTOM = 0;
2123 
2124     /**
2125      * <p>This request is for a preview-like use case.</p>
2126      * <p>The precapture trigger may be used to start off a metering
2127      * w/flash sequence.</p>
2128      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2129      */
2130     public static final int CONTROL_CAPTURE_INTENT_PREVIEW = 1;
2131 
2132     /**
2133      * <p>This request is for a still capture-type
2134      * use case.</p>
2135      * <p>If the flash unit is under automatic control, it may fire as needed.</p>
2136      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2137      */
2138     public static final int CONTROL_CAPTURE_INTENT_STILL_CAPTURE = 2;
2139 
2140     /**
2141      * <p>This request is for a video recording
2142      * use case.</p>
2143      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2144      */
2145     public static final int CONTROL_CAPTURE_INTENT_VIDEO_RECORD = 3;
2146 
2147     /**
2148      * <p>This request is for a video snapshot (still
2149      * image while recording video) use case.</p>
2150      * <p>The camera device should take the highest-quality image
2151      * possible (given the other settings) without disrupting the
2152      * frame rate of video recording.  </p>
2153      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2154      */
2155     public static final int CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT = 4;
2156 
2157     /**
2158      * <p>This request is for a ZSL usecase; the
2159      * application will stream full-resolution images and
2160      * reprocess one or several later for a final
2161      * capture.</p>
2162      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2163      */
2164     public static final int CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG = 5;
2165 
2166     /**
2167      * <p>This request is for manual capture use case where
2168      * the applications want to directly control the capture parameters.</p>
2169      * <p>For example, the application may wish to manually control
2170      * {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}, {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, etc.</p>
2171      *
2172      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
2173      * @see CaptureRequest#SENSOR_SENSITIVITY
2174      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2175      */
2176     public static final int CONTROL_CAPTURE_INTENT_MANUAL = 6;
2177 
2178     /**
2179      * <p>This request is for a motion tracking use case, where
2180      * the application will use camera and inertial sensor data to
2181      * locate and track objects in the world.</p>
2182      * <p>The camera device auto-exposure routine will limit the exposure time
2183      * of the camera to no more than 20 milliseconds, to minimize motion blur.</p>
2184      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2185      */
2186     public static final int CONTROL_CAPTURE_INTENT_MOTION_TRACKING = 7;
2187 
2188     //
2189     // Enumeration values for CaptureRequest#CONTROL_EFFECT_MODE
2190     //
2191 
2192     /**
2193      * <p>No color effect will be applied.</p>
2194      * @see CaptureRequest#CONTROL_EFFECT_MODE
2195      */
2196     public static final int CONTROL_EFFECT_MODE_OFF = 0;
2197 
2198     /**
2199      * <p>A "monocolor" effect where the image is mapped into
2200      * a single color.</p>
2201      * <p>This will typically be grayscale.</p>
2202      * @see CaptureRequest#CONTROL_EFFECT_MODE
2203      */
2204     public static final int CONTROL_EFFECT_MODE_MONO = 1;
2205 
2206     /**
2207      * <p>A "photo-negative" effect where the image's colors
2208      * are inverted.</p>
2209      * @see CaptureRequest#CONTROL_EFFECT_MODE
2210      */
2211     public static final int CONTROL_EFFECT_MODE_NEGATIVE = 2;
2212 
2213     /**
2214      * <p>A "solarisation" effect (Sabattier effect) where the
2215      * image is wholly or partially reversed in
2216      * tone.</p>
2217      * @see CaptureRequest#CONTROL_EFFECT_MODE
2218      */
2219     public static final int CONTROL_EFFECT_MODE_SOLARIZE = 3;
2220 
2221     /**
2222      * <p>A "sepia" effect where the image is mapped into warm
2223      * gray, red, and brown tones.</p>
2224      * @see CaptureRequest#CONTROL_EFFECT_MODE
2225      */
2226     public static final int CONTROL_EFFECT_MODE_SEPIA = 4;
2227 
2228     /**
2229      * <p>A "posterization" effect where the image uses
2230      * discrete regions of tone rather than a continuous
2231      * gradient of tones.</p>
2232      * @see CaptureRequest#CONTROL_EFFECT_MODE
2233      */
2234     public static final int CONTROL_EFFECT_MODE_POSTERIZE = 5;
2235 
2236     /**
2237      * <p>A "whiteboard" effect where the image is typically displayed
2238      * as regions of white, with black or grey details.</p>
2239      * @see CaptureRequest#CONTROL_EFFECT_MODE
2240      */
2241     public static final int CONTROL_EFFECT_MODE_WHITEBOARD = 6;
2242 
2243     /**
2244      * <p>A "blackboard" effect where the image is typically displayed
2245      * as regions of black, with white or grey details.</p>
2246      * @see CaptureRequest#CONTROL_EFFECT_MODE
2247      */
2248     public static final int CONTROL_EFFECT_MODE_BLACKBOARD = 7;
2249 
2250     /**
2251      * <p>An "aqua" effect where a blue hue is added to the image.</p>
2252      * @see CaptureRequest#CONTROL_EFFECT_MODE
2253      */
2254     public static final int CONTROL_EFFECT_MODE_AQUA = 8;
2255 
2256     //
2257     // Enumeration values for CaptureRequest#CONTROL_MODE
2258     //
2259 
2260     /**
2261      * <p>Full application control of pipeline.</p>
2262      * <p>All control by the device's metering and focusing (3A)
2263      * routines is disabled, and no other settings in
2264      * android.control.* have any effect, except that
2265      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} may be used by the camera
2266      * device to select post-processing values for processing
2267      * blocks that do not allow for manual control, or are not
2268      * exposed by the camera API.</p>
2269      * <p>However, the camera device's 3A routines may continue to
2270      * collect statistics and update their internal state so that
2271      * when control is switched to AUTO mode, good control values
2272      * can be immediately applied.</p>
2273      *
2274      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2275      * @see CaptureRequest#CONTROL_MODE
2276      */
2277     public static final int CONTROL_MODE_OFF = 0;
2278 
2279     /**
2280      * <p>Use settings for each individual 3A routine.</p>
2281      * <p>Manual control of capture parameters is disabled. All
2282      * controls in android.control.* besides sceneMode take
2283      * effect.</p>
2284      * @see CaptureRequest#CONTROL_MODE
2285      */
2286     public static final int CONTROL_MODE_AUTO = 1;
2287 
2288     /**
2289      * <p>Use a specific scene mode.</p>
2290      * <p>Enabling this disables control.aeMode, control.awbMode and
2291      * control.afMode controls; the camera device will ignore
2292      * those settings while USE_SCENE_MODE is active (except for
2293      * FACE_PRIORITY scene mode). Other control entries are still active.
2294      * This setting can only be used if scene mode is supported (i.e.
2295      * {@link CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES android.control.availableSceneModes}
2296      * contain some modes other than DISABLED).</p>
2297      * <p>For extended scene modes such as BOKEH, please use USE_EXTENDED_SCENE_MODE instead.</p>
2298      *
2299      * @see CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES
2300      * @see CaptureRequest#CONTROL_MODE
2301      */
2302     public static final int CONTROL_MODE_USE_SCENE_MODE = 2;
2303 
2304     /**
2305      * <p>Same as OFF mode, except that this capture will not be
2306      * used by camera device background auto-exposure, auto-white balance and
2307      * auto-focus algorithms (3A) to update their statistics.</p>
2308      * <p>Specifically, the 3A routines are locked to the last
2309      * values set from a request with AUTO, OFF, or
2310      * USE_SCENE_MODE, and any statistics or state updates
2311      * collected from manual captures with OFF_KEEP_STATE will be
2312      * discarded by the camera device.</p>
2313      * @see CaptureRequest#CONTROL_MODE
2314      */
2315     public static final int CONTROL_MODE_OFF_KEEP_STATE = 3;
2316 
2317     /**
2318      * <p>Use a specific extended scene mode.</p>
2319      * <p>When extended scene mode is on, the camera device may override certain control
2320      * parameters, such as targetFpsRange, AE, AWB, and AF modes, to achieve best power and
2321      * quality tradeoffs. Only the mandatory stream combinations of LIMITED hardware level
2322      * are guaranteed.</p>
2323      * <p>This setting can only be used if extended scene mode is supported (i.e.
2324      * android.control.availableExtendedSceneModes
2325      * contains some modes other than DISABLED).</p>
2326      * @see CaptureRequest#CONTROL_MODE
2327      */
2328     public static final int CONTROL_MODE_USE_EXTENDED_SCENE_MODE = 4;
2329 
2330     //
2331     // Enumeration values for CaptureRequest#CONTROL_SCENE_MODE
2332     //
2333 
2334     /**
2335      * <p>Indicates that no scene modes are set for a given capture request.</p>
2336      * @see CaptureRequest#CONTROL_SCENE_MODE
2337      */
2338     public static final int CONTROL_SCENE_MODE_DISABLED = 0;
2339 
2340     /**
2341      * <p>If face detection support exists, use face
2342      * detection data for auto-focus, auto-white balance, and
2343      * auto-exposure routines.</p>
2344      * <p>If face detection statistics are disabled
2345      * (i.e. {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} is set to OFF),
2346      * this should still operate correctly (but will not return
2347      * face detection statistics to the framework).</p>
2348      * <p>Unlike the other scene modes, {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode},
2349      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
2350      * remain active when FACE_PRIORITY is set.</p>
2351      *
2352      * @see CaptureRequest#CONTROL_AE_MODE
2353      * @see CaptureRequest#CONTROL_AF_MODE
2354      * @see CaptureRequest#CONTROL_AWB_MODE
2355      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2356      * @see CaptureRequest#CONTROL_SCENE_MODE
2357      */
2358     public static final int CONTROL_SCENE_MODE_FACE_PRIORITY = 1;
2359 
2360     /**
2361      * <p>Optimized for photos of quickly moving objects.</p>
2362      * <p>Similar to SPORTS.</p>
2363      * @see CaptureRequest#CONTROL_SCENE_MODE
2364      */
2365     public static final int CONTROL_SCENE_MODE_ACTION = 2;
2366 
2367     /**
2368      * <p>Optimized for still photos of people.</p>
2369      * @see CaptureRequest#CONTROL_SCENE_MODE
2370      */
2371     public static final int CONTROL_SCENE_MODE_PORTRAIT = 3;
2372 
2373     /**
2374      * <p>Optimized for photos of distant macroscopic objects.</p>
2375      * @see CaptureRequest#CONTROL_SCENE_MODE
2376      */
2377     public static final int CONTROL_SCENE_MODE_LANDSCAPE = 4;
2378 
2379     /**
2380      * <p>Optimized for low-light settings.</p>
2381      * @see CaptureRequest#CONTROL_SCENE_MODE
2382      */
2383     public static final int CONTROL_SCENE_MODE_NIGHT = 5;
2384 
2385     /**
2386      * <p>Optimized for still photos of people in low-light
2387      * settings.</p>
2388      * @see CaptureRequest#CONTROL_SCENE_MODE
2389      */
2390     public static final int CONTROL_SCENE_MODE_NIGHT_PORTRAIT = 6;
2391 
2392     /**
2393      * <p>Optimized for dim, indoor settings where flash must
2394      * remain off.</p>
2395      * @see CaptureRequest#CONTROL_SCENE_MODE
2396      */
2397     public static final int CONTROL_SCENE_MODE_THEATRE = 7;
2398 
2399     /**
2400      * <p>Optimized for bright, outdoor beach settings.</p>
2401      * @see CaptureRequest#CONTROL_SCENE_MODE
2402      */
2403     public static final int CONTROL_SCENE_MODE_BEACH = 8;
2404 
2405     /**
2406      * <p>Optimized for bright, outdoor settings containing snow.</p>
2407      * @see CaptureRequest#CONTROL_SCENE_MODE
2408      */
2409     public static final int CONTROL_SCENE_MODE_SNOW = 9;
2410 
2411     /**
2412      * <p>Optimized for scenes of the setting sun.</p>
2413      * @see CaptureRequest#CONTROL_SCENE_MODE
2414      */
2415     public static final int CONTROL_SCENE_MODE_SUNSET = 10;
2416 
2417     /**
2418      * <p>Optimized to avoid blurry photos due to small amounts of
2419      * device motion (for example: due to hand shake).</p>
2420      * @see CaptureRequest#CONTROL_SCENE_MODE
2421      */
2422     public static final int CONTROL_SCENE_MODE_STEADYPHOTO = 11;
2423 
2424     /**
2425      * <p>Optimized for nighttime photos of fireworks.</p>
2426      * @see CaptureRequest#CONTROL_SCENE_MODE
2427      */
2428     public static final int CONTROL_SCENE_MODE_FIREWORKS = 12;
2429 
2430     /**
2431      * <p>Optimized for photos of quickly moving people.</p>
2432      * <p>Similar to ACTION.</p>
2433      * @see CaptureRequest#CONTROL_SCENE_MODE
2434      */
2435     public static final int CONTROL_SCENE_MODE_SPORTS = 13;
2436 
2437     /**
2438      * <p>Optimized for dim, indoor settings with multiple moving
2439      * people.</p>
2440      * @see CaptureRequest#CONTROL_SCENE_MODE
2441      */
2442     public static final int CONTROL_SCENE_MODE_PARTY = 14;
2443 
2444     /**
2445      * <p>Optimized for dim settings where the main light source
2446      * is a candle.</p>
2447      * @see CaptureRequest#CONTROL_SCENE_MODE
2448      */
2449     public static final int CONTROL_SCENE_MODE_CANDLELIGHT = 15;
2450 
2451     /**
2452      * <p>Optimized for accurately capturing a photo of barcode
2453      * for use by camera applications that wish to read the
2454      * barcode value.</p>
2455      * @see CaptureRequest#CONTROL_SCENE_MODE
2456      */
2457     public static final int CONTROL_SCENE_MODE_BARCODE = 16;
2458 
2459     /**
2460      * <p>This is deprecated, please use {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }
2461      * and {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList }
2462      * for high speed video recording.</p>
2463      * <p>Optimized for high speed video recording (frame rate &gt;=60fps) use case.</p>
2464      * <p>The supported high speed video sizes and fps ranges are specified in
2465      * android.control.availableHighSpeedVideoConfigurations. To get desired
2466      * output frame rates, the application is only allowed to select video size
2467      * and fps range combinations listed in this static metadata. The fps range
2468      * can be control via {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}.</p>
2469      * <p>In this mode, the camera device will override aeMode, awbMode, and afMode to
2470      * ON, ON, and CONTINUOUS_VIDEO, respectively. All post-processing block mode
2471      * controls will be overridden to be FAST. Therefore, no manual control of capture
2472      * and post-processing parameters is possible. All other controls operate the
2473      * same as when {@link CaptureRequest#CONTROL_MODE android.control.mode} == AUTO. This means that all other
2474      * android.control.* fields continue to work, such as</p>
2475      * <ul>
2476      * <li>{@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}</li>
2477      * <li>{@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}</li>
2478      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
2479      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
2480      * <li>{@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode}</li>
2481      * <li>{@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}</li>
2482      * <li>{@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}</li>
2483      * <li>{@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions}</li>
2484      * <li>{@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}</li>
2485      * <li>{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}</li>
2486      * <li>{@link CaptureRequest#CONTROL_ZOOM_RATIO android.control.zoomRatio}</li>
2487      * </ul>
2488      * <p>Outside of android.control.*, the following controls will work:</p>
2489      * <ul>
2490      * <li>{@link CaptureRequest#FLASH_MODE android.flash.mode} (automatic flash for still capture will not work since aeMode is ON)</li>
2491      * <li>{@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode} (if it is supported)</li>
2492      * <li>{@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}</li>
2493      * <li>{@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode}</li>
2494      * </ul>
2495      * <p>For high speed recording use case, the actual maximum supported frame rate may
2496      * be lower than what camera can output, depending on the destination Surfaces for
2497      * the image data. For example, if the destination surface is from video encoder,
2498      * the application need check if the video encoder is capable of supporting the
2499      * high frame rate for a given video size, or it will end up with lower recording
2500      * frame rate. If the destination surface is from preview window, the preview frame
2501      * rate will be bounded by the screen refresh rate.</p>
2502      * <p>The camera device will only support up to 2 output high speed streams
2503      * (processed non-stalling format defined in android.request.maxNumOutputStreams)
2504      * in this mode. This control will be effective only if all of below conditions are true:</p>
2505      * <ul>
2506      * <li>The application created no more than maxNumHighSpeedStreams processed non-stalling
2507      * format output streams, where maxNumHighSpeedStreams is calculated as
2508      * min(2, android.request.maxNumOutputStreams[Processed (but not-stalling)]).</li>
2509      * <li>The stream sizes are selected from the sizes reported by
2510      * android.control.availableHighSpeedVideoConfigurations.</li>
2511      * <li>No processed non-stalling or raw streams are configured.</li>
2512      * </ul>
2513      * <p>When above conditions are NOT satistied, the controls of this mode and
2514      * {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange} will be ignored by the camera device,
2515      * the camera device will fall back to {@link CaptureRequest#CONTROL_MODE android.control.mode} <code>==</code> AUTO,
2516      * and the returned capture result metadata will give the fps range choosen
2517      * by the camera device.</p>
2518      * <p>Switching into or out of this mode may trigger some camera ISP/sensor
2519      * reconfigurations, which may introduce extra latency. It is recommended that
2520      * the application avoids unnecessary scene mode switch as much as possible.</p>
2521      *
2522      * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
2523      * @see CaptureRequest#CONTROL_AE_LOCK
2524      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
2525      * @see CaptureRequest#CONTROL_AE_REGIONS
2526      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
2527      * @see CaptureRequest#CONTROL_AF_REGIONS
2528      * @see CaptureRequest#CONTROL_AF_TRIGGER
2529      * @see CaptureRequest#CONTROL_AWB_LOCK
2530      * @see CaptureRequest#CONTROL_AWB_REGIONS
2531      * @see CaptureRequest#CONTROL_EFFECT_MODE
2532      * @see CaptureRequest#CONTROL_MODE
2533      * @see CaptureRequest#CONTROL_ZOOM_RATIO
2534      * @see CaptureRequest#FLASH_MODE
2535      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2536      * @see CaptureRequest#SCALER_CROP_REGION
2537      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2538      * @see CaptureRequest#CONTROL_SCENE_MODE
2539      * @deprecated Please refer to this API documentation to find the alternatives
2540      */
2541     @Deprecated
2542     public static final int CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO = 17;
2543 
2544     /**
2545      * <p>Turn on a device-specific high dynamic range (HDR) mode.</p>
2546      * <p>In this scene mode, the camera device captures images
2547      * that keep a larger range of scene illumination levels
2548      * visible in the final image. For example, when taking a
2549      * picture of a object in front of a bright window, both
2550      * the object and the scene through the window may be
2551      * visible when using HDR mode, while in normal AUTO mode,
2552      * one or the other may be poorly exposed. As a tradeoff,
2553      * HDR mode generally takes much longer to capture a single
2554      * image, has no user control, and may have other artifacts
2555      * depending on the HDR method used.</p>
2556      * <p>Therefore, HDR captures operate at a much slower rate
2557      * than regular captures.</p>
2558      * <p>In this mode, on LIMITED or FULL devices, when a request
2559      * is made with a {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} of
2560      * STILL_CAPTURE, the camera device will capture an image
2561      * using a high dynamic range capture technique.  On LEGACY
2562      * devices, captures that target a JPEG-format output will
2563      * be captured with HDR, and the capture intent is not
2564      * relevant.</p>
2565      * <p>The HDR capture may involve the device capturing a burst
2566      * of images internally and combining them into one, or it
2567      * may involve the device using specialized high dynamic
2568      * range capture hardware. In all cases, a single image is
2569      * produced in response to a capture request submitted
2570      * while in HDR mode.</p>
2571      * <p>Since substantial post-processing is generally needed to
2572      * produce an HDR image, only YUV, PRIVATE, and JPEG
2573      * outputs are supported for LIMITED/FULL device HDR
2574      * captures, and only JPEG outputs are supported for LEGACY
2575      * HDR captures. Using a RAW output for HDR capture is not
2576      * supported.</p>
2577      * <p>Some devices may also support always-on HDR, which
2578      * applies HDR processing at full frame rate.  For these
2579      * devices, intents other than STILL_CAPTURE will also
2580      * produce an HDR output with no frame rate impact compared
2581      * to normal operation, though the quality may be lower
2582      * than for STILL_CAPTURE intents.</p>
2583      * <p>If SCENE_MODE_HDR is used with unsupported output types
2584      * or capture intents, the images captured will be as if
2585      * the SCENE_MODE was not enabled at all.</p>
2586      *
2587      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2588      * @see CaptureRequest#CONTROL_SCENE_MODE
2589      */
2590     public static final int CONTROL_SCENE_MODE_HDR = 18;
2591 
2592     /**
2593      * <p>Same as FACE_PRIORITY scene mode, except that the camera
2594      * device will choose higher sensitivity values ({@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity})
2595      * under low light conditions.</p>
2596      * <p>The camera device may be tuned to expose the images in a reduced
2597      * sensitivity range to produce the best quality images. For example,
2598      * if the {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange} gives range of [100, 1600],
2599      * the camera device auto-exposure routine tuning process may limit the actual
2600      * exposure sensitivity range to [100, 1200] to ensure that the noise level isn't
2601      * exessive in order to preserve the image quality. Under this situation, the image under
2602      * low light may be under-exposed when the sensor max exposure time (bounded by the
2603      * {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange} when {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is one of the
2604      * ON_* modes) and effective max sensitivity are reached. This scene mode allows the
2605      * camera device auto-exposure routine to increase the sensitivity up to the max
2606      * sensitivity specified by {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange} when the scene is too
2607      * dark and the max exposure time is reached. The captured images may be noisier
2608      * compared with the images captured in normal FACE_PRIORITY mode; therefore, it is
2609      * recommended that the application only use this scene mode when it is capable of
2610      * reducing the noise level of the captured images.</p>
2611      * <p>Unlike the other scene modes, {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode},
2612      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
2613      * remain active when FACE_PRIORITY_LOW_LIGHT is set.</p>
2614      *
2615      * @see CaptureRequest#CONTROL_AE_MODE
2616      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
2617      * @see CaptureRequest#CONTROL_AF_MODE
2618      * @see CaptureRequest#CONTROL_AWB_MODE
2619      * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
2620      * @see CaptureRequest#SENSOR_SENSITIVITY
2621      * @see CaptureRequest#CONTROL_SCENE_MODE
2622      * @hide
2623      */
2624     public static final int CONTROL_SCENE_MODE_FACE_PRIORITY_LOW_LIGHT = 19;
2625 
2626     /**
2627      * <p>Scene mode values within the range of
2628      * <code>[DEVICE_CUSTOM_START, DEVICE_CUSTOM_END]</code> are reserved for device specific
2629      * customized scene modes.</p>
2630      * @see CaptureRequest#CONTROL_SCENE_MODE
2631      * @hide
2632      */
2633     public static final int CONTROL_SCENE_MODE_DEVICE_CUSTOM_START = 100;
2634 
2635     /**
2636      * <p>Scene mode values within the range of
2637      * <code>[DEVICE_CUSTOM_START, DEVICE_CUSTOM_END]</code> are reserved for device specific
2638      * customized scene modes.</p>
2639      * @see CaptureRequest#CONTROL_SCENE_MODE
2640      * @hide
2641      */
2642     public static final int CONTROL_SCENE_MODE_DEVICE_CUSTOM_END = 127;
2643 
2644     //
2645     // Enumeration values for CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2646     //
2647 
2648     /**
2649      * <p>Video stabilization is disabled.</p>
2650      * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2651      */
2652     public static final int CONTROL_VIDEO_STABILIZATION_MODE_OFF = 0;
2653 
2654     /**
2655      * <p>Video stabilization is enabled.</p>
2656      * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2657      */
2658     public static final int CONTROL_VIDEO_STABILIZATION_MODE_ON = 1;
2659 
2660     //
2661     // Enumeration values for CaptureRequest#CONTROL_EXTENDED_SCENE_MODE
2662     //
2663 
2664     /**
2665      * <p>Extended scene mode is disabled.</p>
2666      * @see CaptureRequest#CONTROL_EXTENDED_SCENE_MODE
2667      */
2668     public static final int CONTROL_EXTENDED_SCENE_MODE_DISABLED = 0;
2669 
2670     /**
2671      * <p>High quality bokeh mode is enabled for all non-raw streams (including YUV,
2672      * JPEG, and IMPLEMENTATION_DEFINED) when capture intent is STILL_CAPTURE. Due to the
2673      * extra image processing, this mode may introduce additional stall to non-raw streams.
2674      * This mode should be used in high quality still capture use case.</p>
2675      * @see CaptureRequest#CONTROL_EXTENDED_SCENE_MODE
2676      */
2677     public static final int CONTROL_EXTENDED_SCENE_MODE_BOKEH_STILL_CAPTURE = 1;
2678 
2679     /**
2680      * <p>Bokeh effect must not slow down capture rate relative to sensor raw output,
2681      * and the effect is applied to all processed streams no larger than the maximum
2682      * streaming dimension. This mode should be used if performance and power are a
2683      * priority, such as video recording.</p>
2684      * @see CaptureRequest#CONTROL_EXTENDED_SCENE_MODE
2685      */
2686     public static final int CONTROL_EXTENDED_SCENE_MODE_BOKEH_CONTINUOUS = 2;
2687 
2688     /**
2689      * <p>Vendor defined extended scene modes. These depend on vendor implementation.</p>
2690      * @see CaptureRequest#CONTROL_EXTENDED_SCENE_MODE
2691      * @hide
2692      */
2693     public static final int CONTROL_EXTENDED_SCENE_MODE_VENDOR_START = 0x40;
2694 
2695     //
2696     // Enumeration values for CaptureRequest#EDGE_MODE
2697     //
2698 
2699     /**
2700      * <p>No edge enhancement is applied.</p>
2701      * @see CaptureRequest#EDGE_MODE
2702      */
2703     public static final int EDGE_MODE_OFF = 0;
2704 
2705     /**
2706      * <p>Apply edge enhancement at a quality level that does not slow down frame rate
2707      * relative to sensor output. It may be the same as OFF if edge enhancement will
2708      * slow down frame rate relative to sensor.</p>
2709      * @see CaptureRequest#EDGE_MODE
2710      */
2711     public static final int EDGE_MODE_FAST = 1;
2712 
2713     /**
2714      * <p>Apply high-quality edge enhancement, at a cost of possibly reduced output frame rate.</p>
2715      * @see CaptureRequest#EDGE_MODE
2716      */
2717     public static final int EDGE_MODE_HIGH_QUALITY = 2;
2718 
2719     /**
2720      * <p>Edge enhancement is applied at different
2721      * levels for different output streams, based on resolution. Streams at maximum recording
2722      * resolution (see {@link android.hardware.camera2.CameraDevice#createCaptureSession })
2723      * or below have edge enhancement applied, while higher-resolution streams have no edge
2724      * enhancement applied. The level of edge enhancement for low-resolution streams is tuned
2725      * so that frame rate is not impacted, and the quality is equal to or better than FAST
2726      * (since it is only applied to lower-resolution outputs, quality may improve from FAST).</p>
2727      * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
2728      * with YUV or PRIVATE reprocessing, where the application continuously captures
2729      * high-resolution intermediate buffers into a circular buffer, from which a final image is
2730      * produced via reprocessing when a user takes a picture.  For such a use case, the
2731      * high-resolution buffers must not have edge enhancement applied to maximize efficiency of
2732      * preview and to avoid double-applying enhancement when reprocessed, while low-resolution
2733      * buffers (used for recording or preview, generally) need edge enhancement applied for
2734      * reasonable preview quality.</p>
2735      * <p>This mode is guaranteed to be supported by devices that support either the
2736      * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
2737      * ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} lists either of those capabilities) and it will
2738      * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
2739      *
2740      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
2741      * @see CaptureRequest#EDGE_MODE
2742      */
2743     public static final int EDGE_MODE_ZERO_SHUTTER_LAG = 3;
2744 
2745     //
2746     // Enumeration values for CaptureRequest#FLASH_MODE
2747     //
2748 
2749     /**
2750      * <p>Do not fire the flash for this capture.</p>
2751      * @see CaptureRequest#FLASH_MODE
2752      */
2753     public static final int FLASH_MODE_OFF = 0;
2754 
2755     /**
2756      * <p>If the flash is available and charged, fire flash
2757      * for this capture.</p>
2758      * @see CaptureRequest#FLASH_MODE
2759      */
2760     public static final int FLASH_MODE_SINGLE = 1;
2761 
2762     /**
2763      * <p>Transition flash to continuously on.</p>
2764      * @see CaptureRequest#FLASH_MODE
2765      */
2766     public static final int FLASH_MODE_TORCH = 2;
2767 
2768     //
2769     // Enumeration values for CaptureRequest#HOT_PIXEL_MODE
2770     //
2771 
2772     /**
2773      * <p>No hot pixel correction is applied.</p>
2774      * <p>The frame rate must not be reduced relative to sensor raw output
2775      * for this option.</p>
2776      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2777      *
2778      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2779      * @see CaptureRequest#HOT_PIXEL_MODE
2780      */
2781     public static final int HOT_PIXEL_MODE_OFF = 0;
2782 
2783     /**
2784      * <p>Hot pixel correction is applied, without reducing frame
2785      * rate relative to sensor raw output.</p>
2786      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2787      *
2788      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2789      * @see CaptureRequest#HOT_PIXEL_MODE
2790      */
2791     public static final int HOT_PIXEL_MODE_FAST = 1;
2792 
2793     /**
2794      * <p>High-quality hot pixel correction is applied, at a cost
2795      * of possibly reduced frame rate relative to sensor raw output.</p>
2796      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2797      *
2798      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2799      * @see CaptureRequest#HOT_PIXEL_MODE
2800      */
2801     public static final int HOT_PIXEL_MODE_HIGH_QUALITY = 2;
2802 
2803     //
2804     // Enumeration values for CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2805     //
2806 
2807     /**
2808      * <p>Optical stabilization is unavailable.</p>
2809      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2810      */
2811     public static final int LENS_OPTICAL_STABILIZATION_MODE_OFF = 0;
2812 
2813     /**
2814      * <p>Optical stabilization is enabled.</p>
2815      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2816      */
2817     public static final int LENS_OPTICAL_STABILIZATION_MODE_ON = 1;
2818 
2819     //
2820     // Enumeration values for CaptureRequest#NOISE_REDUCTION_MODE
2821     //
2822 
2823     /**
2824      * <p>No noise reduction is applied.</p>
2825      * @see CaptureRequest#NOISE_REDUCTION_MODE
2826      */
2827     public static final int NOISE_REDUCTION_MODE_OFF = 0;
2828 
2829     /**
2830      * <p>Noise reduction is applied without reducing frame rate relative to sensor
2831      * output. It may be the same as OFF if noise reduction will reduce frame rate
2832      * relative to sensor.</p>
2833      * @see CaptureRequest#NOISE_REDUCTION_MODE
2834      */
2835     public static final int NOISE_REDUCTION_MODE_FAST = 1;
2836 
2837     /**
2838      * <p>High-quality noise reduction is applied, at the cost of possibly reduced frame
2839      * rate relative to sensor output.</p>
2840      * @see CaptureRequest#NOISE_REDUCTION_MODE
2841      */
2842     public static final int NOISE_REDUCTION_MODE_HIGH_QUALITY = 2;
2843 
2844     /**
2845      * <p>MINIMAL noise reduction is applied without reducing frame rate relative to
2846      * sensor output. </p>
2847      * @see CaptureRequest#NOISE_REDUCTION_MODE
2848      */
2849     public static final int NOISE_REDUCTION_MODE_MINIMAL = 3;
2850 
2851     /**
2852      * <p>Noise reduction is applied at different levels for different output streams,
2853      * based on resolution. Streams at maximum recording resolution (see {@link android.hardware.camera2.CameraDevice#createCaptureSession })
2854      * or below have noise reduction applied, while higher-resolution streams have MINIMAL (if
2855      * supported) or no noise reduction applied (if MINIMAL is not supported.) The degree of
2856      * noise reduction for low-resolution streams is tuned so that frame rate is not impacted,
2857      * and the quality is equal to or better than FAST (since it is only applied to
2858      * lower-resolution outputs, quality may improve from FAST).</p>
2859      * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
2860      * with YUV or PRIVATE reprocessing, where the application continuously captures
2861      * high-resolution intermediate buffers into a circular buffer, from which a final image is
2862      * produced via reprocessing when a user takes a picture.  For such a use case, the
2863      * high-resolution buffers must not have noise reduction applied to maximize efficiency of
2864      * preview and to avoid over-applying noise filtering when reprocessing, while
2865      * low-resolution buffers (used for recording or preview, generally) need noise reduction
2866      * applied for reasonable preview quality.</p>
2867      * <p>This mode is guaranteed to be supported by devices that support either the
2868      * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
2869      * ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} lists either of those capabilities) and it will
2870      * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
2871      *
2872      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
2873      * @see CaptureRequest#NOISE_REDUCTION_MODE
2874      */
2875     public static final int NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG = 4;
2876 
2877     //
2878     // Enumeration values for CaptureRequest#SCALER_ROTATE_AND_CROP
2879     //
2880 
2881     /**
2882      * <p>No rotate and crop is applied. Processed outputs are in the sensor orientation.</p>
2883      * @see CaptureRequest#SCALER_ROTATE_AND_CROP
2884      */
2885     public static final int SCALER_ROTATE_AND_CROP_NONE = 0;
2886 
2887     /**
2888      * <p>Processed images are rotated by 90 degrees clockwise, and then cropped
2889      * to the original aspect ratio.</p>
2890      * @see CaptureRequest#SCALER_ROTATE_AND_CROP
2891      */
2892     public static final int SCALER_ROTATE_AND_CROP_90 = 1;
2893 
2894     /**
2895      * <p>Processed images are rotated by 180 degrees.  Since the aspect ratio does not
2896      * change, no cropping is performed.</p>
2897      * @see CaptureRequest#SCALER_ROTATE_AND_CROP
2898      */
2899     public static final int SCALER_ROTATE_AND_CROP_180 = 2;
2900 
2901     /**
2902      * <p>Processed images are rotated by 270 degrees clockwise, and then cropped
2903      * to the original aspect ratio.</p>
2904      * @see CaptureRequest#SCALER_ROTATE_AND_CROP
2905      */
2906     public static final int SCALER_ROTATE_AND_CROP_270 = 3;
2907 
2908     /**
2909      * <p>The camera API automatically selects the best concrete value for
2910      * rotate-and-crop based on the application's support for resizability and the current
2911      * multi-window mode.</p>
2912      * <p>If the application does not support resizing but the display mode for its main
2913      * Activity is not in a typical orientation, the camera API will set <code>ROTATE_AND_CROP_90</code>
2914      * or some other supported rotation value, depending on device configuration,
2915      * to ensure preview and captured images are correctly shown to the user. Otherwise,
2916      * <code>ROTATE_AND_CROP_NONE</code> will be selected.</p>
2917      * <p>When a value other than NONE is selected, several metadata fields will also be parsed
2918      * differently to ensure that coordinates are correctly handled for features like drawing
2919      * face detection boxes or passing in tap-to-focus coordinates.  The camera API will
2920      * convert positions in the active array coordinate system to/from the cropped-and-rotated
2921      * coordinate system to make the operation transparent for applications.</p>
2922      * <p>No coordinate mapping will be done when the application selects a non-AUTO mode.</p>
2923      * @see CaptureRequest#SCALER_ROTATE_AND_CROP
2924      */
2925     public static final int SCALER_ROTATE_AND_CROP_AUTO = 4;
2926 
2927     //
2928     // Enumeration values for CaptureRequest#SENSOR_TEST_PATTERN_MODE
2929     //
2930 
2931     /**
2932      * <p>No test pattern mode is used, and the camera
2933      * device returns captures from the image sensor.</p>
2934      * <p>This is the default if the key is not set.</p>
2935      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2936      */
2937     public static final int SENSOR_TEST_PATTERN_MODE_OFF = 0;
2938 
2939     /**
2940      * <p>Each pixel in <code>[R, G_even, G_odd, B]</code> is replaced by its
2941      * respective color channel provided in
2942      * {@link CaptureRequest#SENSOR_TEST_PATTERN_DATA android.sensor.testPatternData}.</p>
2943      * <p>For example:</p>
2944      * <pre><code>{@link CaptureRequest#SENSOR_TEST_PATTERN_DATA android.sensor.testPatternData} = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0]
2945      * </code></pre>
2946      * <p>All green pixels are 100% green. All red/blue pixels are black.</p>
2947      * <pre><code>{@link CaptureRequest#SENSOR_TEST_PATTERN_DATA android.sensor.testPatternData} = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0]
2948      * </code></pre>
2949      * <p>All red pixels are 100% red. Only the odd green pixels
2950      * are 100% green. All blue pixels are 100% black.</p>
2951      *
2952      * @see CaptureRequest#SENSOR_TEST_PATTERN_DATA
2953      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2954      */
2955     public static final int SENSOR_TEST_PATTERN_MODE_SOLID_COLOR = 1;
2956 
2957     /**
2958      * <p>All pixel data is replaced with an 8-bar color pattern.</p>
2959      * <p>The vertical bars (left-to-right) are as follows:</p>
2960      * <ul>
2961      * <li>100% white</li>
2962      * <li>yellow</li>
2963      * <li>cyan</li>
2964      * <li>green</li>
2965      * <li>magenta</li>
2966      * <li>red</li>
2967      * <li>blue</li>
2968      * <li>black</li>
2969      * </ul>
2970      * <p>In general the image would look like the following:</p>
2971      * <pre><code>W Y C G M R B K
2972      * W Y C G M R B K
2973      * W Y C G M R B K
2974      * W Y C G M R B K
2975      * W Y C G M R B K
2976      * . . . . . . . .
2977      * . . . . . . . .
2978      * . . . . . . . .
2979      *
2980      * (B = Blue, K = Black)
2981      * </code></pre>
2982      * <p>Each bar should take up 1/8 of the sensor pixel array width.
2983      * When this is not possible, the bar size should be rounded
2984      * down to the nearest integer and the pattern can repeat
2985      * on the right side.</p>
2986      * <p>Each bar's height must always take up the full sensor
2987      * pixel array height.</p>
2988      * <p>Each pixel in this test pattern must be set to either
2989      * 0% intensity or 100% intensity.</p>
2990      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2991      */
2992     public static final int SENSOR_TEST_PATTERN_MODE_COLOR_BARS = 2;
2993 
2994     /**
2995      * <p>The test pattern is similar to COLOR_BARS, except that
2996      * each bar should start at its specified color at the top,
2997      * and fade to gray at the bottom.</p>
2998      * <p>Furthermore each bar is further subdivided into a left and
2999      * right half. The left half should have a smooth gradient,
3000      * and the right half should have a quantized gradient.</p>
3001      * <p>In particular, the right half's should consist of blocks of the
3002      * same color for 1/16th active sensor pixel array width.</p>
3003      * <p>The least significant bits in the quantized gradient should
3004      * be copied from the most significant bits of the smooth gradient.</p>
3005      * <p>The height of each bar should always be a multiple of 128.
3006      * When this is not the case, the pattern should repeat at the bottom
3007      * of the image.</p>
3008      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
3009      */
3010     public static final int SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY = 3;
3011 
3012     /**
3013      * <p>All pixel data is replaced by a pseudo-random sequence
3014      * generated from a PN9 512-bit sequence (typically implemented
3015      * in hardware with a linear feedback shift register).</p>
3016      * <p>The generator should be reset at the beginning of each frame,
3017      * and thus each subsequent raw frame with this test pattern should
3018      * be exactly the same as the last.</p>
3019      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
3020      */
3021     public static final int SENSOR_TEST_PATTERN_MODE_PN9 = 4;
3022 
3023     /**
3024      * <p>All pixel data is replaced by 0% intensity (black) values.</p>
3025      * <p>This test pattern is identical to SOLID_COLOR with a value of <code>[0, 0, 0, 0]</code> for
3026      * {@link CaptureRequest#SENSOR_TEST_PATTERN_DATA android.sensor.testPatternData}.  It is recommended that devices implement full
3027      * SOLID_COLOR support instead, but BLACK can be used to provide minimal support for a
3028      * test pattern suitable for privacy use cases.</p>
3029      *
3030      * @see CaptureRequest#SENSOR_TEST_PATTERN_DATA
3031      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
3032      * @hide
3033      */
3034     @TestApi
3035     public static final int SENSOR_TEST_PATTERN_MODE_BLACK = 5;
3036 
3037     /**
3038      * <p>The first custom test pattern. All custom patterns that are
3039      * available only on this camera device are at least this numeric
3040      * value.</p>
3041      * <p>All of the custom test patterns will be static
3042      * (that is the raw image must not vary from frame to frame).</p>
3043      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
3044      */
3045     public static final int SENSOR_TEST_PATTERN_MODE_CUSTOM1 = 256;
3046 
3047     //
3048     // Enumeration values for CaptureRequest#SENSOR_PIXEL_MODE
3049     //
3050 
3051     /**
3052      * <p>This is the default sensor pixel mode. This is the only sensor pixel mode
3053      * supported unless a camera device advertises
3054      * {@link android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR }.</p>
3055      * @see CaptureRequest#SENSOR_PIXEL_MODE
3056      */
3057     public static final int SENSOR_PIXEL_MODE_DEFAULT = 0;
3058 
3059     /**
3060      * <p>This sensor pixel mode is offered by devices with capability
3061      * {@link android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR }.
3062      * In this mode, sensors typically do not bin pixels, as a result can offer larger
3063      * image sizes.</p>
3064      * @see CaptureRequest#SENSOR_PIXEL_MODE
3065      */
3066     public static final int SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION = 1;
3067 
3068     //
3069     // Enumeration values for CaptureRequest#SHADING_MODE
3070     //
3071 
3072     /**
3073      * <p>No lens shading correction is applied.</p>
3074      * @see CaptureRequest#SHADING_MODE
3075      */
3076     public static final int SHADING_MODE_OFF = 0;
3077 
3078     /**
3079      * <p>Apply lens shading corrections, without slowing
3080      * frame rate relative to sensor raw output</p>
3081      * @see CaptureRequest#SHADING_MODE
3082      */
3083     public static final int SHADING_MODE_FAST = 1;
3084 
3085     /**
3086      * <p>Apply high-quality lens shading correction, at the
3087      * cost of possibly reduced frame rate.</p>
3088      * @see CaptureRequest#SHADING_MODE
3089      */
3090     public static final int SHADING_MODE_HIGH_QUALITY = 2;
3091 
3092     //
3093     // Enumeration values for CaptureRequest#STATISTICS_FACE_DETECT_MODE
3094     //
3095 
3096     /**
3097      * <p>Do not include face detection statistics in capture
3098      * results.</p>
3099      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
3100      */
3101     public static final int STATISTICS_FACE_DETECT_MODE_OFF = 0;
3102 
3103     /**
3104      * <p>Return face rectangle and confidence values only.</p>
3105      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
3106      */
3107     public static final int STATISTICS_FACE_DETECT_MODE_SIMPLE = 1;
3108 
3109     /**
3110      * <p>Return all face
3111      * metadata.</p>
3112      * <p>In this mode, face rectangles, scores, landmarks, and face IDs are all valid.</p>
3113      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
3114      */
3115     public static final int STATISTICS_FACE_DETECT_MODE_FULL = 2;
3116 
3117     //
3118     // Enumeration values for CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
3119     //
3120 
3121     /**
3122      * <p>Do not include a lens shading map in the capture result.</p>
3123      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
3124      */
3125     public static final int STATISTICS_LENS_SHADING_MAP_MODE_OFF = 0;
3126 
3127     /**
3128      * <p>Include a lens shading map in the capture result.</p>
3129      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
3130      */
3131     public static final int STATISTICS_LENS_SHADING_MAP_MODE_ON = 1;
3132 
3133     //
3134     // Enumeration values for CaptureRequest#STATISTICS_OIS_DATA_MODE
3135     //
3136 
3137     /**
3138      * <p>Do not include OIS data in the capture result.</p>
3139      * @see CaptureRequest#STATISTICS_OIS_DATA_MODE
3140      */
3141     public static final int STATISTICS_OIS_DATA_MODE_OFF = 0;
3142 
3143     /**
3144      * <p>Include OIS data in the capture result.</p>
3145      * <p>{@link CaptureResult#STATISTICS_OIS_SAMPLES android.statistics.oisSamples} provides OIS sample data in the
3146      * output result metadata.</p>
3147      *
3148      * @see CaptureResult#STATISTICS_OIS_SAMPLES
3149      * @see CaptureRequest#STATISTICS_OIS_DATA_MODE
3150      */
3151     public static final int STATISTICS_OIS_DATA_MODE_ON = 1;
3152 
3153     //
3154     // Enumeration values for CaptureRequest#TONEMAP_MODE
3155     //
3156 
3157     /**
3158      * <p>Use the tone mapping curve specified in
3159      * the {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}* entries.</p>
3160      * <p>All color enhancement and tonemapping must be disabled, except
3161      * for applying the tonemapping curve specified by
3162      * {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}.</p>
3163      * <p>Must not slow down frame rate relative to raw
3164      * sensor output.</p>
3165      *
3166      * @see CaptureRequest#TONEMAP_CURVE
3167      * @see CaptureRequest#TONEMAP_MODE
3168      */
3169     public static final int TONEMAP_MODE_CONTRAST_CURVE = 0;
3170 
3171     /**
3172      * <p>Advanced gamma mapping and color enhancement may be applied, without
3173      * reducing frame rate compared to raw sensor output.</p>
3174      * @see CaptureRequest#TONEMAP_MODE
3175      */
3176     public static final int TONEMAP_MODE_FAST = 1;
3177 
3178     /**
3179      * <p>High-quality gamma mapping and color enhancement will be applied, at
3180      * the cost of possibly reduced frame rate compared to raw sensor output.</p>
3181      * @see CaptureRequest#TONEMAP_MODE
3182      */
3183     public static final int TONEMAP_MODE_HIGH_QUALITY = 2;
3184 
3185     /**
3186      * <p>Use the gamma value specified in {@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma} to peform
3187      * tonemapping.</p>
3188      * <p>All color enhancement and tonemapping must be disabled, except
3189      * for applying the tonemapping curve specified by {@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma}.</p>
3190      * <p>Must not slow down frame rate relative to raw sensor output.</p>
3191      *
3192      * @see CaptureRequest#TONEMAP_GAMMA
3193      * @see CaptureRequest#TONEMAP_MODE
3194      */
3195     public static final int TONEMAP_MODE_GAMMA_VALUE = 3;
3196 
3197     /**
3198      * <p>Use the preset tonemapping curve specified in
3199      * {@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve} to peform tonemapping.</p>
3200      * <p>All color enhancement and tonemapping must be disabled, except
3201      * for applying the tonemapping curve specified by
3202      * {@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve}.</p>
3203      * <p>Must not slow down frame rate relative to raw sensor output.</p>
3204      *
3205      * @see CaptureRequest#TONEMAP_PRESET_CURVE
3206      * @see CaptureRequest#TONEMAP_MODE
3207      */
3208     public static final int TONEMAP_MODE_PRESET_CURVE = 4;
3209 
3210     //
3211     // Enumeration values for CaptureRequest#TONEMAP_PRESET_CURVE
3212     //
3213 
3214     /**
3215      * <p>Tonemapping curve is defined by sRGB</p>
3216      * @see CaptureRequest#TONEMAP_PRESET_CURVE
3217      */
3218     public static final int TONEMAP_PRESET_CURVE_SRGB = 0;
3219 
3220     /**
3221      * <p>Tonemapping curve is defined by ITU-R BT.709</p>
3222      * @see CaptureRequest#TONEMAP_PRESET_CURVE
3223      */
3224     public static final int TONEMAP_PRESET_CURVE_REC709 = 1;
3225 
3226     //
3227     // Enumeration values for CaptureRequest#DISTORTION_CORRECTION_MODE
3228     //
3229 
3230     /**
3231      * <p>No distortion correction is applied.</p>
3232      * @see CaptureRequest#DISTORTION_CORRECTION_MODE
3233      */
3234     public static final int DISTORTION_CORRECTION_MODE_OFF = 0;
3235 
3236     /**
3237      * <p>Lens distortion correction is applied without reducing frame rate
3238      * relative to sensor output. It may be the same as OFF if distortion correction would
3239      * reduce frame rate relative to sensor.</p>
3240      * @see CaptureRequest#DISTORTION_CORRECTION_MODE
3241      */
3242     public static final int DISTORTION_CORRECTION_MODE_FAST = 1;
3243 
3244     /**
3245      * <p>High-quality distortion correction is applied, at the cost of
3246      * possibly reduced frame rate relative to sensor output.</p>
3247      * @see CaptureRequest#DISTORTION_CORRECTION_MODE
3248      */
3249     public static final int DISTORTION_CORRECTION_MODE_HIGH_QUALITY = 2;
3250 
3251     //
3252     // Enumeration values for CaptureResult#CONTROL_AE_STATE
3253     //
3254 
3255     /**
3256      * <p>AE is off or recently reset.</p>
3257      * <p>When a camera device is opened, it starts in
3258      * this state. This is a transient state, the camera device may skip reporting
3259      * this state in capture result.</p>
3260      * @see CaptureResult#CONTROL_AE_STATE
3261      */
3262     public static final int CONTROL_AE_STATE_INACTIVE = 0;
3263 
3264     /**
3265      * <p>AE doesn't yet have a good set of control values
3266      * for the current scene.</p>
3267      * <p>This is a transient state, the camera device may skip
3268      * reporting this state in capture result.</p>
3269      * @see CaptureResult#CONTROL_AE_STATE
3270      */
3271     public static final int CONTROL_AE_STATE_SEARCHING = 1;
3272 
3273     /**
3274      * <p>AE has a good set of control values for the
3275      * current scene.</p>
3276      * @see CaptureResult#CONTROL_AE_STATE
3277      */
3278     public static final int CONTROL_AE_STATE_CONVERGED = 2;
3279 
3280     /**
3281      * <p>AE has been locked.</p>
3282      * @see CaptureResult#CONTROL_AE_STATE
3283      */
3284     public static final int CONTROL_AE_STATE_LOCKED = 3;
3285 
3286     /**
3287      * <p>AE has a good set of control values, but flash
3288      * needs to be fired for good quality still
3289      * capture.</p>
3290      * @see CaptureResult#CONTROL_AE_STATE
3291      */
3292     public static final int CONTROL_AE_STATE_FLASH_REQUIRED = 4;
3293 
3294     /**
3295      * <p>AE has been asked to do a precapture sequence
3296      * and is currently executing it.</p>
3297      * <p>Precapture can be triggered through setting
3298      * {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} to START. Currently
3299      * active and completed (if it causes camera device internal AE lock) precapture
3300      * metering sequence can be canceled through setting
3301      * {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} to CANCEL.</p>
3302      * <p>Once PRECAPTURE completes, AE will transition to CONVERGED
3303      * or FLASH_REQUIRED as appropriate. This is a transient
3304      * state, the camera device may skip reporting this state in
3305      * capture result.</p>
3306      *
3307      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
3308      * @see CaptureResult#CONTROL_AE_STATE
3309      */
3310     public static final int CONTROL_AE_STATE_PRECAPTURE = 5;
3311 
3312     //
3313     // Enumeration values for CaptureResult#CONTROL_AF_STATE
3314     //
3315 
3316     /**
3317      * <p>AF is off or has not yet tried to scan/been asked
3318      * to scan.</p>
3319      * <p>When a camera device is opened, it starts in this
3320      * state. This is a transient state, the camera device may
3321      * skip reporting this state in capture
3322      * result.</p>
3323      * @see CaptureResult#CONTROL_AF_STATE
3324      */
3325     public static final int CONTROL_AF_STATE_INACTIVE = 0;
3326 
3327     /**
3328      * <p>AF is currently performing an AF scan initiated the
3329      * camera device in a continuous autofocus mode.</p>
3330      * <p>Only used by CONTINUOUS_* AF modes. This is a transient
3331      * state, the camera device may skip reporting this state in
3332      * capture result.</p>
3333      * @see CaptureResult#CONTROL_AF_STATE
3334      */
3335     public static final int CONTROL_AF_STATE_PASSIVE_SCAN = 1;
3336 
3337     /**
3338      * <p>AF currently believes it is in focus, but may
3339      * restart scanning at any time.</p>
3340      * <p>Only used by CONTINUOUS_* AF modes. This is a transient
3341      * state, the camera device may skip reporting this state in
3342      * capture result.</p>
3343      * @see CaptureResult#CONTROL_AF_STATE
3344      */
3345     public static final int CONTROL_AF_STATE_PASSIVE_FOCUSED = 2;
3346 
3347     /**
3348      * <p>AF is performing an AF scan because it was
3349      * triggered by AF trigger.</p>
3350      * <p>Only used by AUTO or MACRO AF modes. This is a transient
3351      * state, the camera device may skip reporting this state in
3352      * capture result.</p>
3353      * @see CaptureResult#CONTROL_AF_STATE
3354      */
3355     public static final int CONTROL_AF_STATE_ACTIVE_SCAN = 3;
3356 
3357     /**
3358      * <p>AF believes it is focused correctly and has locked
3359      * focus.</p>
3360      * <p>This state is reached only after an explicit START AF trigger has been
3361      * sent ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}), when good focus has been obtained.</p>
3362      * <p>The lens will remain stationary until the AF mode ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) is changed or
3363      * a new AF trigger is sent to the camera device ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}).</p>
3364      *
3365      * @see CaptureRequest#CONTROL_AF_MODE
3366      * @see CaptureRequest#CONTROL_AF_TRIGGER
3367      * @see CaptureResult#CONTROL_AF_STATE
3368      */
3369     public static final int CONTROL_AF_STATE_FOCUSED_LOCKED = 4;
3370 
3371     /**
3372      * <p>AF has failed to focus successfully and has locked
3373      * focus.</p>
3374      * <p>This state is reached only after an explicit START AF trigger has been
3375      * sent ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}), when good focus cannot be obtained.</p>
3376      * <p>The lens will remain stationary until the AF mode ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) is changed or
3377      * a new AF trigger is sent to the camera device ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}).</p>
3378      *
3379      * @see CaptureRequest#CONTROL_AF_MODE
3380      * @see CaptureRequest#CONTROL_AF_TRIGGER
3381      * @see CaptureResult#CONTROL_AF_STATE
3382      */
3383     public static final int CONTROL_AF_STATE_NOT_FOCUSED_LOCKED = 5;
3384 
3385     /**
3386      * <p>AF finished a passive scan without finding focus,
3387      * and may restart scanning at any time.</p>
3388      * <p>Only used by CONTINUOUS_* AF modes. This is a transient state, the camera
3389      * device may skip reporting this state in capture result.</p>
3390      * <p>LEGACY camera devices do not support this state. When a passive
3391      * scan has finished, it will always go to PASSIVE_FOCUSED.</p>
3392      * @see CaptureResult#CONTROL_AF_STATE
3393      */
3394     public static final int CONTROL_AF_STATE_PASSIVE_UNFOCUSED = 6;
3395 
3396     //
3397     // Enumeration values for CaptureResult#CONTROL_AWB_STATE
3398     //
3399 
3400     /**
3401      * <p>AWB is not in auto mode, or has not yet started metering.</p>
3402      * <p>When a camera device is opened, it starts in this
3403      * state. This is a transient state, the camera device may
3404      * skip reporting this state in capture
3405      * result.</p>
3406      * @see CaptureResult#CONTROL_AWB_STATE
3407      */
3408     public static final int CONTROL_AWB_STATE_INACTIVE = 0;
3409 
3410     /**
3411      * <p>AWB doesn't yet have a good set of control
3412      * values for the current scene.</p>
3413      * <p>This is a transient state, the camera device
3414      * may skip reporting this state in capture result.</p>
3415      * @see CaptureResult#CONTROL_AWB_STATE
3416      */
3417     public static final int CONTROL_AWB_STATE_SEARCHING = 1;
3418 
3419     /**
3420      * <p>AWB has a good set of control values for the
3421      * current scene.</p>
3422      * @see CaptureResult#CONTROL_AWB_STATE
3423      */
3424     public static final int CONTROL_AWB_STATE_CONVERGED = 2;
3425 
3426     /**
3427      * <p>AWB has been locked.</p>
3428      * @see CaptureResult#CONTROL_AWB_STATE
3429      */
3430     public static final int CONTROL_AWB_STATE_LOCKED = 3;
3431 
3432     //
3433     // Enumeration values for CaptureResult#CONTROL_AF_SCENE_CHANGE
3434     //
3435 
3436     /**
3437      * <p>Scene change is not detected within the AF region(s).</p>
3438      * @see CaptureResult#CONTROL_AF_SCENE_CHANGE
3439      */
3440     public static final int CONTROL_AF_SCENE_CHANGE_NOT_DETECTED = 0;
3441 
3442     /**
3443      * <p>Scene change is detected within the AF region(s).</p>
3444      * @see CaptureResult#CONTROL_AF_SCENE_CHANGE
3445      */
3446     public static final int CONTROL_AF_SCENE_CHANGE_DETECTED = 1;
3447 
3448     //
3449     // Enumeration values for CaptureResult#FLASH_STATE
3450     //
3451 
3452     /**
3453      * <p>No flash on camera.</p>
3454      * @see CaptureResult#FLASH_STATE
3455      */
3456     public static final int FLASH_STATE_UNAVAILABLE = 0;
3457 
3458     /**
3459      * <p>Flash is charging and cannot be fired.</p>
3460      * @see CaptureResult#FLASH_STATE
3461      */
3462     public static final int FLASH_STATE_CHARGING = 1;
3463 
3464     /**
3465      * <p>Flash is ready to fire.</p>
3466      * @see CaptureResult#FLASH_STATE
3467      */
3468     public static final int FLASH_STATE_READY = 2;
3469 
3470     /**
3471      * <p>Flash fired for this capture.</p>
3472      * @see CaptureResult#FLASH_STATE
3473      */
3474     public static final int FLASH_STATE_FIRED = 3;
3475 
3476     /**
3477      * <p>Flash partially illuminated this frame.</p>
3478      * <p>This is usually due to the next or previous frame having
3479      * the flash fire, and the flash spilling into this capture
3480      * due to hardware limitations.</p>
3481      * @see CaptureResult#FLASH_STATE
3482      */
3483     public static final int FLASH_STATE_PARTIAL = 4;
3484 
3485     //
3486     // Enumeration values for CaptureResult#LENS_STATE
3487     //
3488 
3489     /**
3490      * <p>The lens parameters ({@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
3491      * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} and {@link CaptureRequest#LENS_APERTURE android.lens.aperture}) are not changing.</p>
3492      *
3493      * @see CaptureRequest#LENS_APERTURE
3494      * @see CaptureRequest#LENS_FILTER_DENSITY
3495      * @see CaptureRequest#LENS_FOCAL_LENGTH
3496      * @see CaptureRequest#LENS_FOCUS_DISTANCE
3497      * @see CaptureResult#LENS_STATE
3498      */
3499     public static final int LENS_STATE_STATIONARY = 0;
3500 
3501     /**
3502      * <p>One or several of the lens parameters
3503      * ({@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
3504      * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} or {@link CaptureRequest#LENS_APERTURE android.lens.aperture}) is
3505      * currently changing.</p>
3506      *
3507      * @see CaptureRequest#LENS_APERTURE
3508      * @see CaptureRequest#LENS_FILTER_DENSITY
3509      * @see CaptureRequest#LENS_FOCAL_LENGTH
3510      * @see CaptureRequest#LENS_FOCUS_DISTANCE
3511      * @see CaptureResult#LENS_STATE
3512      */
3513     public static final int LENS_STATE_MOVING = 1;
3514 
3515     //
3516     // Enumeration values for CaptureResult#STATISTICS_SCENE_FLICKER
3517     //
3518 
3519     /**
3520      * <p>The camera device does not detect any flickering illumination
3521      * in the current scene.</p>
3522      * @see CaptureResult#STATISTICS_SCENE_FLICKER
3523      */
3524     public static final int STATISTICS_SCENE_FLICKER_NONE = 0;
3525 
3526     /**
3527      * <p>The camera device detects illumination flickering at 50Hz
3528      * in the current scene.</p>
3529      * @see CaptureResult#STATISTICS_SCENE_FLICKER
3530      */
3531     public static final int STATISTICS_SCENE_FLICKER_50HZ = 1;
3532 
3533     /**
3534      * <p>The camera device detects illumination flickering at 60Hz
3535      * in the current scene.</p>
3536      * @see CaptureResult#STATISTICS_SCENE_FLICKER
3537      */
3538     public static final int STATISTICS_SCENE_FLICKER_60HZ = 2;
3539 
3540     //
3541     // Enumeration values for CaptureResult#SYNC_FRAME_NUMBER
3542     //
3543 
3544     /**
3545      * <p>The current result is not yet fully synchronized to any request.</p>
3546      * <p>Synchronization is in progress, and reading metadata from this
3547      * result may include a mix of data that have taken effect since the
3548      * last synchronization time.</p>
3549      * <p>In some future result, within {@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} frames,
3550      * this value will update to the actual frame number frame number
3551      * the result is guaranteed to be synchronized to (as long as the
3552      * request settings remain constant).</p>
3553      *
3554      * @see CameraCharacteristics#SYNC_MAX_LATENCY
3555      * @see CaptureResult#SYNC_FRAME_NUMBER
3556      * @hide
3557      */
3558     public static final int SYNC_FRAME_NUMBER_CONVERGING = -1;
3559 
3560     /**
3561      * <p>The current result's synchronization status is unknown.</p>
3562      * <p>The result may have already converged, or it may be in
3563      * progress.  Reading from this result may include some mix
3564      * of settings from past requests.</p>
3565      * <p>After a settings change, the new settings will eventually all
3566      * take effect for the output buffers and results. However, this
3567      * value will not change when that happens. Altering settings
3568      * rapidly may provide outcomes using mixes of settings from recent
3569      * requests.</p>
3570      * <p>This value is intended primarily for backwards compatibility with
3571      * the older camera implementations (for android.hardware.Camera).</p>
3572      * @see CaptureResult#SYNC_FRAME_NUMBER
3573      * @hide
3574      */
3575     public static final int SYNC_FRAME_NUMBER_UNKNOWN = -2;
3576 
3577     /*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
3578      * End generated code
3579      *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~O@*/
3580 
3581 }
3582