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.hardware.camera2.impl.CameraMetadataNative;
21 import android.hardware.camera2.impl.PublicKey;
22 import android.hardware.camera2.impl.SyntheticKey;
23 import android.util.Log;
24 
25 import java.lang.reflect.Field;
26 import java.lang.reflect.Modifier;
27 import java.util.ArrayList;
28 import java.util.Arrays;
29 import java.util.Collections;
30 import java.util.List;
31 
32 /**
33  * The base class for camera controls and information.
34  *
35  * <p>
36  * This class defines the basic key/value map used for querying for camera
37  * characteristics or capture results, and for setting camera request
38  * parameters.
39  * </p>
40  *
41  * <p>
42  * All instances of CameraMetadata are immutable. The list of keys with {@link #getKeys()}
43  * never changes, nor do the values returned by any key with {@code #get} throughout
44  * the lifetime of the object.
45  * </p>
46  *
47  * @see CameraDevice
48  * @see CameraManager
49  * @see CameraCharacteristics
50  **/
51 public abstract class CameraMetadata<TKey> {
52 
53     private static final String TAG = "CameraMetadataAb";
54     private static final boolean DEBUG = false;
55 
56     /**
57      * Set a camera metadata field to a value. The field definitions can be
58      * found in {@link CameraCharacteristics}, {@link CaptureResult}, and
59      * {@link CaptureRequest}.
60      *
61      * @param key The metadata field to write.
62      * @param value The value to set the field to, which must be of a matching
63      * type to the key.
64      *
65      * @hide
66      */
CameraMetadata()67     protected CameraMetadata() {
68     }
69 
70     /**
71      * Get a camera metadata field value.
72      *
73      * <p>The field definitions can be
74      * found in {@link CameraCharacteristics}, {@link CaptureResult}, and
75      * {@link CaptureRequest}.</p>
76      *
77      * <p>Querying the value for the same key more than once will return a value
78      * which is equal to the previous queried value.</p>
79      *
80      * @throws IllegalArgumentException if the key was not valid
81      *
82      * @param key The metadata field to read.
83      * @return The value of that key, or {@code null} if the field is not set.
84      *
85      * @hide
86      */
getProtected(TKey key)87      protected abstract <T> T getProtected(TKey key);
88 
89      /**
90       * @hide
91       */
getKeyClass()92      protected abstract Class<TKey> getKeyClass();
93 
94     /**
95      * Returns a list of the keys contained in this map.
96      *
97      * <p>The list returned is not modifiable, so any attempts to modify it will throw
98      * a {@code UnsupportedOperationException}.</p>
99      *
100      * <p>All values retrieved by a key from this list with {@code #get} are guaranteed to be
101      * non-{@code null}. Each key is only listed once in the list. The order of the keys
102      * is undefined.</p>
103      *
104      * @return List of the keys contained in this map.
105      */
106     @SuppressWarnings("unchecked")
107     @NonNull
getKeys()108     public List<TKey> getKeys() {
109         Class<CameraMetadata<TKey>> thisClass = (Class<CameraMetadata<TKey>>) getClass();
110         return Collections.unmodifiableList(
111                 getKeysStatic(thisClass, getKeyClass(), this, /*filterTags*/null));
112     }
113 
114     /**
115      * Return a list of all the Key<?> that are declared as a field inside of the class
116      * {@code type}.
117      *
118      * <p>
119      * Optionally, if {@code instance} is not null, then filter out any keys with null values.
120      * </p>
121      *
122      * <p>
123      * Optionally, if {@code filterTags} is not {@code null}, then filter out any keys
124      * whose native {@code tag} is not in {@code filterTags}. The {@code filterTags} array will be
125      * sorted as a side effect.
126      * </p>
127      */
128      /*package*/ @SuppressWarnings("unchecked")
getKeysStatic( Class<?> type, Class<TKey> keyClass, CameraMetadata<TKey> instance, int[] filterTags)129     static <TKey> ArrayList<TKey> getKeysStatic(
130              Class<?> type, Class<TKey> keyClass,
131              CameraMetadata<TKey> instance,
132              int[] filterTags) {
133 
134         if (DEBUG) Log.v(TAG, "getKeysStatic for " + type);
135 
136         // TotalCaptureResult does not have any of the keys on it, use CaptureResult instead
137         if (type.equals(TotalCaptureResult.class)) {
138             type = CaptureResult.class;
139         }
140 
141         if (filterTags != null) {
142             Arrays.sort(filterTags);
143         }
144 
145         ArrayList<TKey> keyList = new ArrayList<TKey>();
146 
147         Field[] fields = type.getDeclaredFields();
148         for (Field field : fields) {
149             // Filter for Keys that are public
150             if (field.getType().isAssignableFrom(keyClass) &&
151                     (field.getModifiers() & Modifier.PUBLIC) != 0) {
152 
153                 TKey key;
154                 try {
155                     key = (TKey) field.get(instance);
156                 } catch (IllegalAccessException e) {
157                     throw new AssertionError("Can't get IllegalAccessException", e);
158                 } catch (IllegalArgumentException e) {
159                     throw new AssertionError("Can't get IllegalArgumentException", e);
160                 }
161 
162                 if (instance == null || instance.getProtected(key) != null) {
163                     if (shouldKeyBeAdded(key, field, filterTags)) {
164                         keyList.add(key);
165 
166                         if (DEBUG) {
167                             Log.v(TAG, "getKeysStatic - key was added - " + key);
168                         }
169                     } else if (DEBUG) {
170                         Log.v(TAG, "getKeysStatic - key was filtered - " + key);
171                     }
172                 }
173             }
174         }
175 
176         ArrayList<TKey> vendorKeys = CameraMetadataNative.getAllVendorKeys(keyClass);
177 
178         if (vendorKeys != null) {
179             for (TKey k : vendorKeys) {
180                 String keyName;
181                 if (k instanceof CaptureRequest.Key<?>) {
182                     keyName = ((CaptureRequest.Key<?>) k).getName();
183                 } else if (k instanceof CaptureResult.Key<?>) {
184                     keyName = ((CaptureResult.Key<?>) k).getName();
185                 } else if (k instanceof CameraCharacteristics.Key<?>) {
186                     keyName = ((CameraCharacteristics.Key<?>) k).getName();
187                 } else {
188                     continue;
189                 }
190 
191                 if (filterTags == null || Arrays.binarySearch(filterTags,
192                         CameraMetadataNative.getTag(keyName)) >= 0) {
193                     keyList.add(k);
194                 }
195             }
196         }
197 
198         return keyList;
199     }
200 
201     @SuppressWarnings("rawtypes")
shouldKeyBeAdded(TKey key, Field field, int[] filterTags)202     private static <TKey> boolean shouldKeyBeAdded(TKey key, Field field, int[] filterTags) {
203         if (key == null) {
204             throw new NullPointerException("key must not be null");
205         }
206 
207         CameraMetadataNative.Key nativeKey;
208 
209         /*
210          * Get the native key from the public api key
211          */
212         if (key instanceof CameraCharacteristics.Key) {
213             nativeKey = ((CameraCharacteristics.Key)key).getNativeKey();
214         } else if (key instanceof CaptureResult.Key) {
215             nativeKey = ((CaptureResult.Key)key).getNativeKey();
216         } else if (key instanceof CaptureRequest.Key) {
217             nativeKey = ((CaptureRequest.Key)key).getNativeKey();
218         } else {
219             // Reject fields that aren't a key
220             throw new IllegalArgumentException("key type must be that of a metadata key");
221         }
222 
223         if (field.getAnnotation(PublicKey.class) == null) {
224             // Never expose @hide keys up to the API user
225             return false;
226         }
227 
228         // No filtering necessary
229         if (filterTags == null) {
230             return true;
231         }
232 
233         if (field.getAnnotation(SyntheticKey.class) != null) {
234             // This key is synthetic, so calling #getTag will throw IAE
235 
236             // TODO: don't just assume all public+synthetic keys are always available
237             return true;
238         }
239 
240         /*
241          * Regular key: look up it's native tag and see if it's in filterTags
242          */
243 
244         int keyTag = nativeKey.getTag();
245 
246         // non-negative result is returned iff the value is in the array
247         return Arrays.binarySearch(filterTags, keyTag) >= 0;
248     }
249 
250     /*@O~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
251      * The enum values below this point are generated from metadata
252      * definitions in /system/media/camera/docs. Do not modify by hand or
253      * modify the comment blocks at the start or end.
254      *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~*/
255 
256     //
257     // Enumeration values for CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
258     //
259 
260     /**
261      * <p>The lens focus distance is not accurate, and the units used for
262      * {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} do not correspond to any physical units.</p>
263      * <p>Setting the lens to the same focus distance on separate occasions may
264      * result in a different real focus distance, depending on factors such
265      * as the orientation of the device, the age of the focusing mechanism,
266      * and the device temperature. The focus distance value will still be
267      * in the range of <code>[0, {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}]</code>, where 0
268      * represents the farthest focus.</p>
269      *
270      * @see CaptureRequest#LENS_FOCUS_DISTANCE
271      * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
272      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
273      */
274     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED = 0;
275 
276     /**
277      * <p>The lens focus distance is measured in diopters.</p>
278      * <p>However, setting the lens to the same focus distance
279      * on separate occasions may result in a different real
280      * focus distance, depending on factors such as the
281      * orientation of the device, the age of the focusing
282      * mechanism, and the device temperature.</p>
283      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
284      */
285     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE = 1;
286 
287     /**
288      * <p>The lens focus distance is measured in diopters, and
289      * is calibrated.</p>
290      * <p>The lens mechanism is calibrated so that setting the
291      * same focus distance is repeatable on multiple
292      * occasions with good accuracy, and the focus distance
293      * corresponds to the real physical distance to the plane
294      * of best focus.</p>
295      * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
296      */
297     public static final int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED = 2;
298 
299     //
300     // Enumeration values for CameraCharacteristics#LENS_FACING
301     //
302 
303     /**
304      * <p>The camera device faces the same direction as the device's screen.</p>
305      * @see CameraCharacteristics#LENS_FACING
306      */
307     public static final int LENS_FACING_FRONT = 0;
308 
309     /**
310      * <p>The camera device faces the opposite direction as the device's screen.</p>
311      * @see CameraCharacteristics#LENS_FACING
312      */
313     public static final int LENS_FACING_BACK = 1;
314 
315     /**
316      * <p>The camera device is an external camera, and has no fixed facing relative to the
317      * device's screen.</p>
318      * @see CameraCharacteristics#LENS_FACING
319      */
320     public static final int LENS_FACING_EXTERNAL = 2;
321 
322     //
323     // Enumeration values for CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
324     //
325 
326     /**
327      * <p>The minimal set of capabilities that every camera
328      * device (regardless of {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel})
329      * supports.</p>
330      * <p>This capability is listed by all normal devices, and
331      * indicates that the camera device has a feature set
332      * that's comparable to the baseline requirements for the
333      * older android.hardware.Camera API.</p>
334      * <p>Devices with the DEPTH_OUTPUT capability might not list this
335      * capability, indicating that they support only depth measurement,
336      * not standard color output.</p>
337      *
338      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
339      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
340      */
341     public static final int REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE = 0;
342 
343     /**
344      * <p>The camera device can be manually controlled (3A algorithms such
345      * as auto-exposure, and auto-focus can be bypassed).
346      * The camera device supports basic manual control of the sensor image
347      * acquisition related stages. This means the following controls are
348      * guaranteed to be supported:</p>
349      * <ul>
350      * <li>Manual frame duration control<ul>
351      * <li>{@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}</li>
352      * <li>{@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration}</li>
353      * </ul>
354      * </li>
355      * <li>Manual exposure control<ul>
356      * <li>{@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</li>
357      * <li>{@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</li>
358      * </ul>
359      * </li>
360      * <li>Manual sensitivity control<ul>
361      * <li>{@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</li>
362      * <li>{@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}</li>
363      * </ul>
364      * </li>
365      * <li>Manual lens control (if the lens is adjustable)<ul>
366      * <li>android.lens.*</li>
367      * </ul>
368      * </li>
369      * <li>Manual flash control (if a flash unit is present)<ul>
370      * <li>android.flash.*</li>
371      * </ul>
372      * </li>
373      * <li>Manual black level locking<ul>
374      * <li>{@link CaptureRequest#BLACK_LEVEL_LOCK android.blackLevel.lock}</li>
375      * </ul>
376      * </li>
377      * <li>Auto exposure lock<ul>
378      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
379      * </ul>
380      * </li>
381      * </ul>
382      * <p>If any of the above 3A algorithms are enabled, then the camera
383      * device will accurately report the values applied by 3A in the
384      * result.</p>
385      * <p>A given camera device may also support additional manual sensor controls,
386      * but this capability only covers the above list of controls.</p>
387      * <p>If this is supported, {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap} will
388      * additionally return a min frame duration that is greater than
389      * zero for each supported size-format combination.</p>
390      *
391      * @see CaptureRequest#BLACK_LEVEL_LOCK
392      * @see CaptureRequest#CONTROL_AE_LOCK
393      * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
394      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
395      * @see CaptureRequest#SENSOR_FRAME_DURATION
396      * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
397      * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
398      * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
399      * @see CaptureRequest#SENSOR_SENSITIVITY
400      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
401      */
402     public static final int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR = 1;
403 
404     /**
405      * <p>The camera device post-processing stages can be manually controlled.
406      * The camera device supports basic manual control of the image post-processing
407      * stages. This means the following controls are guaranteed to be supported:</p>
408      * <ul>
409      * <li>
410      * <p>Manual tonemap control</p>
411      * <ul>
412      * <li>{@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}</li>
413      * <li>{@link CaptureRequest#TONEMAP_MODE android.tonemap.mode}</li>
414      * <li>{@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</li>
415      * <li>{@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma}</li>
416      * <li>{@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve}</li>
417      * </ul>
418      * </li>
419      * <li>
420      * <p>Manual white balance control</p>
421      * <ul>
422      * <li>{@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}</li>
423      * <li>{@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}</li>
424      * </ul>
425      * </li>
426      * <li>Manual lens shading map control<ul>
427      * <li>{@link CaptureRequest#SHADING_MODE android.shading.mode}</li>
428      * <li>{@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode}</li>
429      * <li>android.statistics.lensShadingMap</li>
430      * <li>android.lens.info.shadingMapSize</li>
431      * </ul>
432      * </li>
433      * <li>Manual aberration correction control (if aberration correction is supported)<ul>
434      * <li>{@link CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE android.colorCorrection.aberrationMode}</li>
435      * <li>{@link CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES android.colorCorrection.availableAberrationModes}</li>
436      * </ul>
437      * </li>
438      * <li>Auto white balance lock<ul>
439      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
440      * </ul>
441      * </li>
442      * </ul>
443      * <p>If auto white balance is enabled, then the camera device
444      * will accurately report the values applied by AWB in the result.</p>
445      * <p>A given camera device may also support additional post-processing
446      * controls, but this capability only covers the above list of controls.</p>
447      *
448      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
449      * @see CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
450      * @see CaptureRequest#COLOR_CORRECTION_GAINS
451      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
452      * @see CaptureRequest#CONTROL_AWB_LOCK
453      * @see CaptureRequest#SHADING_MODE
454      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
455      * @see CaptureRequest#TONEMAP_CURVE
456      * @see CaptureRequest#TONEMAP_GAMMA
457      * @see CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS
458      * @see CaptureRequest#TONEMAP_MODE
459      * @see CaptureRequest#TONEMAP_PRESET_CURVE
460      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
461      */
462     public static final int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING = 2;
463 
464     /**
465      * <p>The camera device supports outputting RAW buffers and
466      * metadata for interpreting them.</p>
467      * <p>Devices supporting the RAW capability allow both for
468      * saving DNG files, and for direct application processing of
469      * raw sensor images.</p>
470      * <ul>
471      * <li>RAW_SENSOR is supported as an output format.</li>
472      * <li>The maximum available resolution for RAW_SENSOR streams
473      *   will match either the value in
474      *   {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize} or
475      *   {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize}.</li>
476      * <li>All DNG-related optional metadata entries are provided
477      *   by the camera device.</li>
478      * </ul>
479      *
480      * @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
481      * @see CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
482      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
483      */
484     public static final int REQUEST_AVAILABLE_CAPABILITIES_RAW = 3;
485 
486     /**
487      * <p>The camera device supports the Zero Shutter Lag reprocessing use case.</p>
488      * <ul>
489      * <li>One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.</li>
490      * <li>{@link android.graphics.ImageFormat#PRIVATE } is supported as an output/input format,
491      *   that is, {@link android.graphics.ImageFormat#PRIVATE } is included in the lists of
492      *   formats returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats } and {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats }.</li>
493      * <li>{@link android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput }
494      *   returns non empty int[] for each supported input format returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats }.</li>
495      * <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>
496      * <li>Using {@link android.graphics.ImageFormat#PRIVATE } does not cause a frame rate drop
497      *   relative to the sensor's maximum capture rate (at that resolution).</li>
498      * <li>{@link android.graphics.ImageFormat#PRIVATE } will be reprocessable into both
499      *   {@link android.graphics.ImageFormat#YUV_420_888 } and
500      *   {@link android.graphics.ImageFormat#JPEG } formats.</li>
501      * <li>The maximum available resolution for PRIVATE streams
502      *   (both input/output) will match the maximum available
503      *   resolution of JPEG streams.</li>
504      * <li>Static metadata {@link CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL android.reprocess.maxCaptureStall}.</li>
505      * <li>Only below controls are effective for reprocessing requests and
506      *   will be present in capture results, other controls in reprocess
507      *   requests will be ignored by the camera device.<ul>
508      * <li>android.jpeg.*</li>
509      * <li>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</li>
510      * <li>{@link CaptureRequest#EDGE_MODE android.edge.mode}</li>
511      * </ul>
512      * </li>
513      * <li>{@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes} and
514      *   {@link CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES android.edge.availableEdgeModes} will both list ZERO_SHUTTER_LAG as a supported mode.</li>
515      * </ul>
516      *
517      * @see CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES
518      * @see CaptureRequest#EDGE_MODE
519      * @see CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
520      * @see CaptureRequest#NOISE_REDUCTION_MODE
521      * @see CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL
522      * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
523      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
524      */
525     public static final int REQUEST_AVAILABLE_CAPABILITIES_PRIVATE_REPROCESSING = 4;
526 
527     /**
528      * <p>The camera device supports accurately reporting the sensor settings for many of
529      * the sensor controls while the built-in 3A algorithm is running.  This allows
530      * reporting of sensor settings even when these settings cannot be manually changed.</p>
531      * <p>The values reported for the following controls are guaranteed to be available
532      * in the CaptureResult, including when 3A is enabled:</p>
533      * <ul>
534      * <li>Exposure control<ul>
535      * <li>{@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}</li>
536      * </ul>
537      * </li>
538      * <li>Sensitivity control<ul>
539      * <li>{@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</li>
540      * </ul>
541      * </li>
542      * <li>Lens controls (if the lens is adjustable)<ul>
543      * <li>{@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance}</li>
544      * <li>{@link CaptureRequest#LENS_APERTURE android.lens.aperture}</li>
545      * </ul>
546      * </li>
547      * </ul>
548      * <p>This capability is a subset of the MANUAL_SENSOR control capability, and will
549      * always be included if the MANUAL_SENSOR capability is available.</p>
550      *
551      * @see CaptureRequest#LENS_APERTURE
552      * @see CaptureRequest#LENS_FOCUS_DISTANCE
553      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
554      * @see CaptureRequest#SENSOR_SENSITIVITY
555      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
556      */
557     public static final int REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS = 5;
558 
559     /**
560      * <p>The camera device supports capturing high-resolution images at &gt;= 20 frames per
561      * second, in at least the uncompressed YUV format, when post-processing settings are set
562      * to FAST. Additionally, maximum-resolution images can be captured at &gt;= 10 frames
563      * per second.  Here, 'high resolution' means at least 8 megapixels, or the maximum
564      * resolution of the device, whichever is smaller.</p>
565      * <p>More specifically, this means that a size matching the camera device's active array
566      * 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 },
567      * with a minimum frame duration for that format and size of either &lt;= 1/20 s, or
568      * &lt;= 1/10 s, respectively; and the {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges} entry
569      * lists at least one FPS range where the minimum FPS is &gt;= 1 / minimumFrameDuration
570      * for the maximum-size YUV_420_888 format.  If that maximum size is listed in {@link android.hardware.camera2.params.StreamConfigurationMap#getHighResolutionOutputSizes },
571      * then the list of resolutions for YUV_420_888 from {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes } contains at
572      * least one resolution &gt;= 8 megapixels, with a minimum frame duration of &lt;= 1/20
573      * s.</p>
574      * <p>If the device supports the {@link android.graphics.ImageFormat#RAW10 }, {@link android.graphics.ImageFormat#RAW12 }, then those can also be captured at the same rate
575      * as the maximum-size YUV_420_888 resolution is.</p>
576      * <p>If the device supports the PRIVATE_REPROCESSING capability, then the same guarantees
577      * as for the YUV_420_888 format also apply to the {@link android.graphics.ImageFormat#PRIVATE } format.</p>
578      * <p>In addition, the {@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} field is guaranted to have a value between 0
579      * and 4, inclusive. {@link CameraCharacteristics#CONTROL_AE_LOCK_AVAILABLE android.control.aeLockAvailable} and {@link CameraCharacteristics#CONTROL_AWB_LOCK_AVAILABLE android.control.awbLockAvailable}
580      * are also guaranteed to be <code>true</code> so burst capture with these two locks ON yields
581      * consistent image output.</p>
582      *
583      * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
584      * @see CameraCharacteristics#CONTROL_AE_LOCK_AVAILABLE
585      * @see CameraCharacteristics#CONTROL_AWB_LOCK_AVAILABLE
586      * @see CameraCharacteristics#SYNC_MAX_LATENCY
587      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
588      */
589     public static final int REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE = 6;
590 
591     /**
592      * <p>The camera device supports the YUV_420_888 reprocessing use case, similar as
593      * PRIVATE_REPROCESSING, This capability requires the camera device to support the
594      * following:</p>
595      * <ul>
596      * <li>One input stream is supported, that is, <code>{@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} == 1</code>.</li>
597      * <li>{@link android.graphics.ImageFormat#YUV_420_888 } is supported as an output/input format, that is,
598      *   YUV_420_888 is included in the lists of formats returned by
599      *   {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats } and
600      *   {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats }.</li>
601      * <li>{@link android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput }
602      *   returns non-empty int[] for each supported input format returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats }.</li>
603      * <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>
604      * <li>Using {@link android.graphics.ImageFormat#YUV_420_888 } does not cause a frame rate drop
605      *   relative to the sensor's maximum capture rate (at that resolution).</li>
606      * <li>{@link android.graphics.ImageFormat#YUV_420_888 } will be reprocessable into both
607      *   {@link android.graphics.ImageFormat#YUV_420_888 } and {@link android.graphics.ImageFormat#JPEG } formats.</li>
608      * <li>The maximum available resolution for {@link android.graphics.ImageFormat#YUV_420_888 } streams (both input/output) will match the
609      *   maximum available resolution of {@link android.graphics.ImageFormat#JPEG } streams.</li>
610      * <li>Static metadata {@link CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL android.reprocess.maxCaptureStall}.</li>
611      * <li>Only the below controls are effective for reprocessing requests and will be present
612      *   in capture results. The reprocess requests are from the original capture results that
613      *   are associated with the intermediate {@link android.graphics.ImageFormat#YUV_420_888 }
614      *   output buffers.  All other controls in the reprocess requests will be ignored by the
615      *   camera device.<ul>
616      * <li>android.jpeg.*</li>
617      * <li>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</li>
618      * <li>{@link CaptureRequest#EDGE_MODE android.edge.mode}</li>
619      * <li>{@link CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR android.reprocess.effectiveExposureFactor}</li>
620      * </ul>
621      * </li>
622      * <li>{@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes} and
623      *   {@link CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES android.edge.availableEdgeModes} will both list ZERO_SHUTTER_LAG as a supported mode.</li>
624      * </ul>
625      *
626      * @see CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES
627      * @see CaptureRequest#EDGE_MODE
628      * @see CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
629      * @see CaptureRequest#NOISE_REDUCTION_MODE
630      * @see CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR
631      * @see CameraCharacteristics#REPROCESS_MAX_CAPTURE_STALL
632      * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
633      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
634      */
635     public static final int REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING = 7;
636 
637     /**
638      * <p>The camera device can produce depth measurements from its field of view.</p>
639      * <p>This capability requires the camera device to support the following:</p>
640      * <ul>
641      * <li>{@link android.graphics.ImageFormat#DEPTH16 } is supported as an output format.</li>
642      * <li>{@link android.graphics.ImageFormat#DEPTH_POINT_CLOUD } is optionally supported as an
643      *   output format.</li>
644      * <li>This camera device, and all camera devices with the same {@link CameraCharacteristics#LENS_FACING android.lens.facing},
645      *   will list the following calibration entries in both
646      *   {@link android.hardware.camera2.CameraCharacteristics } and
647      *   {@link android.hardware.camera2.CaptureResult }:<ul>
648      * <li>{@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation}</li>
649      * <li>{@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation}</li>
650      * <li>{@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration}</li>
651      * <li>{@link CameraCharacteristics#LENS_RADIAL_DISTORTION android.lens.radialDistortion}</li>
652      * </ul>
653      * </li>
654      * <li>The {@link CameraCharacteristics#DEPTH_DEPTH_IS_EXCLUSIVE android.depth.depthIsExclusive} entry is listed by this device.</li>
655      * <li>A LIMITED camera with only the DEPTH_OUTPUT capability does not have to support
656      *   normal YUV_420_888, JPEG, and PRIV-format outputs. It only has to support the DEPTH16
657      *   format.</li>
658      * </ul>
659      * <p>Generally, depth output operates at a slower frame rate than standard color capture,
660      * so the DEPTH16 and DEPTH_POINT_CLOUD formats will commonly have a stall duration that
661      * should be accounted for (see
662      * {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration }).
663      * On a device that supports both depth and color-based output, to enable smooth preview,
664      * using a repeating burst is recommended, where a depth-output target is only included
665      * once every N frames, where N is the ratio between preview output rate and depth output
666      * rate, including depth stall time.</p>
667      *
668      * @see CameraCharacteristics#DEPTH_DEPTH_IS_EXCLUSIVE
669      * @see CameraCharacteristics#LENS_FACING
670      * @see CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
671      * @see CameraCharacteristics#LENS_POSE_ROTATION
672      * @see CameraCharacteristics#LENS_POSE_TRANSLATION
673      * @see CameraCharacteristics#LENS_RADIAL_DISTORTION
674      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
675      */
676     public static final int REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT = 8;
677 
678     /**
679      * <p>The device supports constrained high speed video recording (frame rate &gt;=120fps)
680      * use case. The camera device will support high speed capture session created by
681      * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }, which
682      * only accepts high speed request lists created by
683      * {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList }.</p>
684      * <p>A camera device can still support high speed video streaming by advertising the high speed
685      * FPS ranges in {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges}. For this case, all normal
686      * capture request per frame control and synchronization requirements will apply to
687      * the high speed fps ranges, the same as all other fps ranges. This capability describes
688      * the capability of a specialized operating mode with many limitations (see below), which
689      * is only targeted at high speed video recording.</p>
690      * <p>The supported high speed video sizes and fps ranges are specified in
691      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges }.
692      * To get desired output frame rates, the application is only allowed to select video size
693      * and FPS range combinations provided by
694      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes }.
695      * The fps range can be controlled via {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}.</p>
696      * <p>In this capability, the camera device will override aeMode, awbMode, and afMode to
697      * ON, AUTO, and CONTINUOUS_VIDEO, respectively. All post-processing block mode
698      * controls will be overridden to be FAST. Therefore, no manual control of capture
699      * and post-processing parameters is possible. All other controls operate the
700      * same as when {@link CaptureRequest#CONTROL_MODE android.control.mode} == AUTO. This means that all other
701      * android.control.* fields continue to work, such as</p>
702      * <ul>
703      * <li>{@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}</li>
704      * <li>{@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}</li>
705      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
706      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
707      * <li>{@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode}</li>
708      * <li>{@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}</li>
709      * <li>{@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}</li>
710      * <li>{@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions}</li>
711      * <li>{@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}</li>
712      * <li>{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}</li>
713      * </ul>
714      * <p>Outside of android.control.*, the following controls will work:</p>
715      * <ul>
716      * <li>{@link CaptureRequest#FLASH_MODE android.flash.mode} (TORCH mode only, automatic flash for still capture will not
717      * work since aeMode is ON)</li>
718      * <li>{@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode} (if it is supported)</li>
719      * <li>{@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}</li>
720      * <li>{@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} (if it is supported)</li>
721      * </ul>
722      * <p>For high speed recording use case, the actual maximum supported frame rate may
723      * be lower than what camera can output, depending on the destination Surfaces for
724      * the image data. For example, if the destination surface is from video encoder,
725      * the application need check if the video encoder is capable of supporting the
726      * high frame rate for a given video size, or it will end up with lower recording
727      * frame rate. If the destination surface is from preview window, the actual preview frame
728      * rate will be bounded by the screen refresh rate.</p>
729      * <p>The camera device will only support up to 2 high speed simultaneous output surfaces
730      * (preview and recording surfaces)
731      * in this mode. Above controls will be effective only if all of below conditions are true:</p>
732      * <ul>
733      * <li>The application creates a camera capture session with no more than 2 surfaces via
734      * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }. The
735      * targeted surfaces must be preview surface (either from
736      * {@link android.view.SurfaceView } or {@link android.graphics.SurfaceTexture }) or
737      * recording surface(either from {@link android.media.MediaRecorder#getSurface } or
738      * {@link android.media.MediaCodec#createInputSurface }).</li>
739      * <li>The stream sizes are selected from the sizes reported by
740      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes }.</li>
741      * <li>The FPS ranges are selected from
742      * {@link android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges }.</li>
743      * </ul>
744      * <p>When above conditions are NOT satistied,
745      * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }
746      * will fail.</p>
747      * <p>Switching to a FPS range that has different maximum FPS may trigger some camera device
748      * reconfigurations, which may introduce extra latency. It is recommended that
749      * the application avoids unnecessary maximum target FPS changes as much as possible
750      * during high speed streaming.</p>
751      *
752      * @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
753      * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
754      * @see CaptureRequest#CONTROL_AE_LOCK
755      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
756      * @see CaptureRequest#CONTROL_AE_REGIONS
757      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
758      * @see CaptureRequest#CONTROL_AF_REGIONS
759      * @see CaptureRequest#CONTROL_AF_TRIGGER
760      * @see CaptureRequest#CONTROL_AWB_LOCK
761      * @see CaptureRequest#CONTROL_AWB_REGIONS
762      * @see CaptureRequest#CONTROL_EFFECT_MODE
763      * @see CaptureRequest#CONTROL_MODE
764      * @see CaptureRequest#FLASH_MODE
765      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
766      * @see CaptureRequest#SCALER_CROP_REGION
767      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
768      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
769      */
770     public static final int REQUEST_AVAILABLE_CAPABILITIES_CONSTRAINED_HIGH_SPEED_VIDEO = 9;
771 
772     //
773     // Enumeration values for CameraCharacteristics#SCALER_CROPPING_TYPE
774     //
775 
776     /**
777      * <p>The camera device only supports centered crop regions.</p>
778      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
779      */
780     public static final int SCALER_CROPPING_TYPE_CENTER_ONLY = 0;
781 
782     /**
783      * <p>The camera device supports arbitrarily chosen crop regions.</p>
784      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
785      */
786     public static final int SCALER_CROPPING_TYPE_FREEFORM = 1;
787 
788     //
789     // Enumeration values for CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
790     //
791 
792     /**
793      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
794      */
795     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB = 0;
796 
797     /**
798      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
799      */
800     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG = 1;
801 
802     /**
803      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
804      */
805     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG = 2;
806 
807     /**
808      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
809      */
810     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR = 3;
811 
812     /**
813      * <p>Sensor is not Bayer; output has 3 16-bit
814      * values for each pixel, instead of just 1 16-bit value
815      * per pixel.</p>
816      * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
817      */
818     public static final int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB = 4;
819 
820     //
821     // Enumeration values for CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
822     //
823 
824     /**
825      * <p>Timestamps from {@link CaptureResult#SENSOR_TIMESTAMP android.sensor.timestamp} are in nanoseconds and monotonic,
826      * but can not be compared to timestamps from other subsystems
827      * (e.g. accelerometer, gyro etc.), or other instances of the same or different
828      * camera devices in the same system. Timestamps between streams and results for
829      * a single camera instance are comparable, and the timestamps for all buffers
830      * and the result metadata generated by a single capture are identical.</p>
831      *
832      * @see CaptureResult#SENSOR_TIMESTAMP
833      * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
834      */
835     public static final int SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN = 0;
836 
837     /**
838      * <p>Timestamps from {@link CaptureResult#SENSOR_TIMESTAMP android.sensor.timestamp} are in the same timebase as
839      * {@link android.os.SystemClock#elapsedRealtimeNanos },
840      * and they can be compared to other timestamps using that base.</p>
841      *
842      * @see CaptureResult#SENSOR_TIMESTAMP
843      * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
844      */
845     public static final int SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME = 1;
846 
847     //
848     // Enumeration values for CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
849     //
850 
851     /**
852      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
853      */
854     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT = 1;
855 
856     /**
857      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
858      */
859     public static final int SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT = 2;
860 
861     /**
862      * <p>Incandescent light</p>
863      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
864      */
865     public static final int SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN = 3;
866 
867     /**
868      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
869      */
870     public static final int SENSOR_REFERENCE_ILLUMINANT1_FLASH = 4;
871 
872     /**
873      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
874      */
875     public static final int SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER = 9;
876 
877     /**
878      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
879      */
880     public static final int SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER = 10;
881 
882     /**
883      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
884      */
885     public static final int SENSOR_REFERENCE_ILLUMINANT1_SHADE = 11;
886 
887     /**
888      * <p>D 5700 - 7100K</p>
889      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
890      */
891     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT = 12;
892 
893     /**
894      * <p>N 4600 - 5400K</p>
895      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
896      */
897     public static final int SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT = 13;
898 
899     /**
900      * <p>W 3900 - 4500K</p>
901      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
902      */
903     public static final int SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT = 14;
904 
905     /**
906      * <p>WW 3200 - 3700K</p>
907      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
908      */
909     public static final int SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT = 15;
910 
911     /**
912      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
913      */
914     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A = 17;
915 
916     /**
917      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
918      */
919     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B = 18;
920 
921     /**
922      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
923      */
924     public static final int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C = 19;
925 
926     /**
927      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
928      */
929     public static final int SENSOR_REFERENCE_ILLUMINANT1_D55 = 20;
930 
931     /**
932      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
933      */
934     public static final int SENSOR_REFERENCE_ILLUMINANT1_D65 = 21;
935 
936     /**
937      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
938      */
939     public static final int SENSOR_REFERENCE_ILLUMINANT1_D75 = 22;
940 
941     /**
942      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
943      */
944     public static final int SENSOR_REFERENCE_ILLUMINANT1_D50 = 23;
945 
946     /**
947      * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
948      */
949     public static final int SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN = 24;
950 
951     //
952     // Enumeration values for CameraCharacteristics#LED_AVAILABLE_LEDS
953     //
954 
955     /**
956      * <p>android.led.transmit control is used.</p>
957      * @see CameraCharacteristics#LED_AVAILABLE_LEDS
958      * @hide
959      */
960     public static final int LED_AVAILABLE_LEDS_TRANSMIT = 0;
961 
962     //
963     // Enumeration values for CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
964     //
965 
966     /**
967      * <p>This camera device does not have enough capabilities to qualify as a <code>FULL</code> device or
968      * better.</p>
969      * <p>Only the stream configurations listed in the <code>LEGACY</code> and <code>LIMITED</code> tables in the
970      * {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession} documentation are guaranteed to be supported.</p>
971      * <p>All <code>LIMITED</code> devices support the <code>BACKWARDS_COMPATIBLE</code> capability, indicating basic
972      * support for color image capture. The only exception is that the device may
973      * alternatively support only the <code>DEPTH_OUTPUT</code> capability, if it can only output depth
974      * measurements and not color images.</p>
975      * <p><code>LIMITED</code> devices and above require the use of {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}
976      * to lock exposure metering (and calculate flash power, for cameras with flash) before
977      * capturing a high-quality still image.</p>
978      * <p>A <code>LIMITED</code> device that only lists the <code>BACKWARDS_COMPATIBLE</code> capability is only
979      * required to support full-automatic operation and post-processing (<code>OFF</code> is not
980      * supported for {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}, {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}, or
981      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode})</p>
982      * <p>Additional capabilities may optionally be supported by a <code>LIMITED</code>-level device, and
983      * can be checked for in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}.</p>
984      *
985      * @see CaptureRequest#CONTROL_AE_MODE
986      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
987      * @see CaptureRequest#CONTROL_AF_MODE
988      * @see CaptureRequest#CONTROL_AWB_MODE
989      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
990      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
991      */
992     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED = 0;
993 
994     /**
995      * <p>This camera device is capable of supporting advanced imaging applications.</p>
996      * <p>The stream configurations listed in the <code>FULL</code>, <code>LEGACY</code> and <code>LIMITED</code> tables in the
997      * {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession} documentation are guaranteed to be supported.</p>
998      * <p>A <code>FULL</code> device will support below capabilities:</p>
999      * <ul>
1000      * <li><code>BURST_CAPTURE</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1001      *   <code>BURST_CAPTURE</code>)</li>
1002      * <li>Per frame control ({@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} <code>==</code> PER_FRAME_CONTROL)</li>
1003      * <li>Manual sensor control ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains <code>MANUAL_SENSOR</code>)</li>
1004      * <li>Manual post-processing control ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1005      *   <code>MANUAL_POST_PROCESSING</code>)</li>
1006      * <li>The required exposure time range defined in {@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</li>
1007      * <li>The required maxFrameDuration defined in {@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration}</li>
1008      * </ul>
1009      * <p>Note:
1010      * Pre-API level 23, FULL devices also supported arbitrary cropping region
1011      * ({@link CameraCharacteristics#SCALER_CROPPING_TYPE android.scaler.croppingType} <code>== FREEFORM</code>); this requirement was relaxed in API level
1012      * 23, and <code>FULL</code> devices may only support <code>CENTERED</code> cropping.</p>
1013      *
1014      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1015      * @see CameraCharacteristics#SCALER_CROPPING_TYPE
1016      * @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
1017      * @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
1018      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1019      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1020      */
1021     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_FULL = 1;
1022 
1023     /**
1024      * <p>This camera device is running in backward compatibility mode.</p>
1025      * <p>Only the stream configurations listed in the <code>LEGACY</code> table in the {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession}
1026      * documentation are supported.</p>
1027      * <p>A <code>LEGACY</code> device does not support per-frame control, manual sensor control, manual
1028      * post-processing, arbitrary cropping regions, and has relaxed performance constraints.
1029      * No additional capabilities beyond <code>BACKWARD_COMPATIBLE</code> will ever be listed by a
1030      * <code>LEGACY</code> device in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}.</p>
1031      * <p>In addition, the {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is not functional on <code>LEGACY</code>
1032      * devices. Instead, every request that includes a JPEG-format output target is treated
1033      * as triggering a still capture, internally executing a precapture trigger.  This may
1034      * fire the flash for flash power metering during precapture, and then fire the flash
1035      * for the final capture, if a flash is available on the device and the AE mode is set to
1036      * enable the flash.</p>
1037      *
1038      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1039      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1040      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1041      */
1042     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY = 2;
1043 
1044     /**
1045      * <p>This camera device is capable of YUV reprocessing and RAW data capture, in addition to
1046      * FULL-level capabilities.</p>
1047      * <p>The stream configurations listed in the <code>LEVEL_3</code>, <code>RAW</code>, <code>FULL</code>, <code>LEGACY</code> and
1048      * <code>LIMITED</code> tables in the {@link android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession}
1049      * documentation are guaranteed to be supported.</p>
1050      * <p>The following additional capabilities are guaranteed to be supported:</p>
1051      * <ul>
1052      * <li><code>YUV_REPROCESSING</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1053      *   <code>YUV_REPROCESSING</code>)</li>
1054      * <li><code>RAW</code> capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains
1055      *   <code>RAW</code>)</li>
1056      * </ul>
1057      *
1058      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
1059      * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
1060      */
1061     public static final int INFO_SUPPORTED_HARDWARE_LEVEL_3 = 3;
1062 
1063     //
1064     // Enumeration values for CameraCharacteristics#SYNC_MAX_LATENCY
1065     //
1066 
1067     /**
1068      * <p>Every frame has the requests immediately applied.</p>
1069      * <p>Changing controls over multiple requests one after another will
1070      * produce results that have those controls applied atomically
1071      * each frame.</p>
1072      * <p>All FULL capability devices will have this as their maxLatency.</p>
1073      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1074      */
1075     public static final int SYNC_MAX_LATENCY_PER_FRAME_CONTROL = 0;
1076 
1077     /**
1078      * <p>Each new frame has some subset (potentially the entire set)
1079      * of the past requests applied to the camera settings.</p>
1080      * <p>By submitting a series of identical requests, the camera device
1081      * will eventually have the camera settings applied, but it is
1082      * unknown when that exact point will be.</p>
1083      * <p>All LEGACY capability devices will have this as their maxLatency.</p>
1084      * @see CameraCharacteristics#SYNC_MAX_LATENCY
1085      */
1086     public static final int SYNC_MAX_LATENCY_UNKNOWN = -1;
1087 
1088     //
1089     // Enumeration values for CaptureRequest#COLOR_CORRECTION_MODE
1090     //
1091 
1092     /**
1093      * <p>Use the {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} matrix
1094      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} to do color conversion.</p>
1095      * <p>All advanced white balance adjustments (not specified
1096      * by our white balance pipeline) must be disabled.</p>
1097      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1098      * TRANSFORM_MATRIX is ignored. The camera device will override
1099      * this value to either FAST or HIGH_QUALITY.</p>
1100      *
1101      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1102      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1103      * @see CaptureRequest#CONTROL_AWB_MODE
1104      * @see CaptureRequest#COLOR_CORRECTION_MODE
1105      */
1106     public static final int COLOR_CORRECTION_MODE_TRANSFORM_MATRIX = 0;
1107 
1108     /**
1109      * <p>Color correction processing must not slow down
1110      * capture rate relative to sensor raw output.</p>
1111      * <p>Advanced white balance adjustments above and beyond
1112      * the specified white balance pipeline may be applied.</p>
1113      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1114      * the camera device uses the last frame's AWB values
1115      * (or defaults if AWB has never been run).</p>
1116      *
1117      * @see CaptureRequest#CONTROL_AWB_MODE
1118      * @see CaptureRequest#COLOR_CORRECTION_MODE
1119      */
1120     public static final int COLOR_CORRECTION_MODE_FAST = 1;
1121 
1122     /**
1123      * <p>Color correction processing operates at improved
1124      * quality but the capture rate might be reduced (relative to sensor
1125      * raw output rate)</p>
1126      * <p>Advanced white balance adjustments above and beyond
1127      * the specified white balance pipeline may be applied.</p>
1128      * <p>If AWB is enabled with <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != OFF</code>, then
1129      * the camera device uses the last frame's AWB values
1130      * (or defaults if AWB has never been run).</p>
1131      *
1132      * @see CaptureRequest#CONTROL_AWB_MODE
1133      * @see CaptureRequest#COLOR_CORRECTION_MODE
1134      */
1135     public static final int COLOR_CORRECTION_MODE_HIGH_QUALITY = 2;
1136 
1137     //
1138     // Enumeration values for CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1139     //
1140 
1141     /**
1142      * <p>No aberration correction is applied.</p>
1143      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1144      */
1145     public static final int COLOR_CORRECTION_ABERRATION_MODE_OFF = 0;
1146 
1147     /**
1148      * <p>Aberration correction will not slow down capture rate
1149      * relative to sensor raw output.</p>
1150      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1151      */
1152     public static final int COLOR_CORRECTION_ABERRATION_MODE_FAST = 1;
1153 
1154     /**
1155      * <p>Aberration correction operates at improved quality but the capture rate might be
1156      * reduced (relative to sensor raw output rate)</p>
1157      * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
1158      */
1159     public static final int COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY = 2;
1160 
1161     //
1162     // Enumeration values for CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1163     //
1164 
1165     /**
1166      * <p>The camera device will not adjust exposure duration to
1167      * avoid banding problems.</p>
1168      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1169      */
1170     public static final int CONTROL_AE_ANTIBANDING_MODE_OFF = 0;
1171 
1172     /**
1173      * <p>The camera device will adjust exposure duration to
1174      * avoid banding problems with 50Hz illumination sources.</p>
1175      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1176      */
1177     public static final int CONTROL_AE_ANTIBANDING_MODE_50HZ = 1;
1178 
1179     /**
1180      * <p>The camera device will adjust exposure duration to
1181      * avoid banding problems with 60Hz illumination
1182      * sources.</p>
1183      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1184      */
1185     public static final int CONTROL_AE_ANTIBANDING_MODE_60HZ = 2;
1186 
1187     /**
1188      * <p>The camera device will automatically adapt its
1189      * antibanding routine to the current illumination
1190      * condition. This is the default mode if AUTO is
1191      * available on given camera device.</p>
1192      * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
1193      */
1194     public static final int CONTROL_AE_ANTIBANDING_MODE_AUTO = 3;
1195 
1196     //
1197     // Enumeration values for CaptureRequest#CONTROL_AE_MODE
1198     //
1199 
1200     /**
1201      * <p>The camera device's autoexposure routine is disabled.</p>
1202      * <p>The application-selected {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
1203      * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity} and
1204      * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} are used by the camera
1205      * device, along with android.flash.* fields, if there's
1206      * a flash unit for this camera device.</p>
1207      * <p>Note that auto-white balance (AWB) and auto-focus (AF)
1208      * behavior is device dependent when AE is in OFF mode.
1209      * To have consistent behavior across different devices,
1210      * it is recommended to either set AWB and AF to OFF mode
1211      * or lock AWB and AF before setting AE to OFF.
1212      * See {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode},
1213      * {@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}, and {@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}
1214      * for more details.</p>
1215      * <p>LEGACY devices do not support the OFF mode and will
1216      * override attempts to use this value to ON.</p>
1217      *
1218      * @see CaptureRequest#CONTROL_AF_MODE
1219      * @see CaptureRequest#CONTROL_AF_TRIGGER
1220      * @see CaptureRequest#CONTROL_AWB_LOCK
1221      * @see CaptureRequest#CONTROL_AWB_MODE
1222      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1223      * @see CaptureRequest#SENSOR_FRAME_DURATION
1224      * @see CaptureRequest#SENSOR_SENSITIVITY
1225      * @see CaptureRequest#CONTROL_AE_MODE
1226      */
1227     public static final int CONTROL_AE_MODE_OFF = 0;
1228 
1229     /**
1230      * <p>The camera device's autoexposure routine is active,
1231      * with no flash control.</p>
1232      * <p>The application's values for
1233      * {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
1234      * {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and
1235      * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} are ignored. The
1236      * application has control over the various
1237      * android.flash.* fields.</p>
1238      *
1239      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1240      * @see CaptureRequest#SENSOR_FRAME_DURATION
1241      * @see CaptureRequest#SENSOR_SENSITIVITY
1242      * @see CaptureRequest#CONTROL_AE_MODE
1243      */
1244     public static final int CONTROL_AE_MODE_ON = 1;
1245 
1246     /**
1247      * <p>Like ON, except that the camera device also controls
1248      * the camera's flash unit, firing it in low-light
1249      * conditions.</p>
1250      * <p>The flash may be fired during a precapture sequence
1251      * (triggered by {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) and
1252      * may be fired for captures for which the
1253      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} field is set to
1254      * STILL_CAPTURE</p>
1255      *
1256      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1257      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1258      * @see CaptureRequest#CONTROL_AE_MODE
1259      */
1260     public static final int CONTROL_AE_MODE_ON_AUTO_FLASH = 2;
1261 
1262     /**
1263      * <p>Like ON, except that the camera device also controls
1264      * the camera's flash unit, always firing it for still
1265      * captures.</p>
1266      * <p>The flash may be fired during a precapture sequence
1267      * (triggered by {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}) and
1268      * will always be fired for captures for which the
1269      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} field is set to
1270      * STILL_CAPTURE</p>
1271      *
1272      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1273      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1274      * @see CaptureRequest#CONTROL_AE_MODE
1275      */
1276     public static final int CONTROL_AE_MODE_ON_ALWAYS_FLASH = 3;
1277 
1278     /**
1279      * <p>Like ON_AUTO_FLASH, but with automatic red eye
1280      * reduction.</p>
1281      * <p>If deemed necessary by the camera device, a red eye
1282      * reduction flash will fire during the precapture
1283      * sequence.</p>
1284      * @see CaptureRequest#CONTROL_AE_MODE
1285      */
1286     public static final int CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE = 4;
1287 
1288     //
1289     // Enumeration values for CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1290     //
1291 
1292     /**
1293      * <p>The trigger is idle.</p>
1294      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1295      */
1296     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_IDLE = 0;
1297 
1298     /**
1299      * <p>The precapture metering sequence will be started
1300      * by the camera device.</p>
1301      * <p>The exact effect of the precapture trigger depends on
1302      * the current AE mode and state.</p>
1303      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1304      */
1305     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_START = 1;
1306 
1307     /**
1308      * <p>The camera device will cancel any currently active or completed
1309      * precapture metering sequence, the auto-exposure routine will return to its
1310      * initial state.</p>
1311      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1312      */
1313     public static final int CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL = 2;
1314 
1315     //
1316     // Enumeration values for CaptureRequest#CONTROL_AF_MODE
1317     //
1318 
1319     /**
1320      * <p>The auto-focus routine does not control the lens;
1321      * {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} is controlled by the
1322      * application.</p>
1323      *
1324      * @see CaptureRequest#LENS_FOCUS_DISTANCE
1325      * @see CaptureRequest#CONTROL_AF_MODE
1326      */
1327     public static final int CONTROL_AF_MODE_OFF = 0;
1328 
1329     /**
1330      * <p>Basic automatic focus mode.</p>
1331      * <p>In this mode, the lens does not move unless
1332      * the autofocus trigger action is called. When that trigger
1333      * is activated, AF will transition to ACTIVE_SCAN, then to
1334      * the outcome of the scan (FOCUSED or NOT_FOCUSED).</p>
1335      * <p>Always supported if lens is not fixed focus.</p>
1336      * <p>Use {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} to determine if lens
1337      * is fixed-focus.</p>
1338      * <p>Triggering AF_CANCEL resets the lens position to default,
1339      * and sets the AF state to INACTIVE.</p>
1340      *
1341      * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
1342      * @see CaptureRequest#CONTROL_AF_MODE
1343      */
1344     public static final int CONTROL_AF_MODE_AUTO = 1;
1345 
1346     /**
1347      * <p>Close-up focusing mode.</p>
1348      * <p>In this mode, the lens does not move unless the
1349      * autofocus trigger action is called. When that trigger is
1350      * activated, AF will transition to ACTIVE_SCAN, then to
1351      * the outcome of the scan (FOCUSED or NOT_FOCUSED). This
1352      * mode is optimized for focusing on objects very close to
1353      * the camera.</p>
1354      * <p>When that trigger is activated, AF will transition to
1355      * ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or
1356      * NOT_FOCUSED). Triggering cancel AF resets the lens
1357      * position to default, and sets the AF state to
1358      * INACTIVE.</p>
1359      * @see CaptureRequest#CONTROL_AF_MODE
1360      */
1361     public static final int CONTROL_AF_MODE_MACRO = 2;
1362 
1363     /**
1364      * <p>In this mode, the AF algorithm modifies the lens
1365      * position continually to attempt to provide a
1366      * constantly-in-focus image stream.</p>
1367      * <p>The focusing behavior should be suitable for good quality
1368      * video recording; typically this means slower focus
1369      * movement and no overshoots. When the AF trigger is not
1370      * involved, the AF algorithm should start in INACTIVE state,
1371      * and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED
1372      * states as appropriate. When the AF trigger is activated,
1373      * the algorithm should immediately transition into
1374      * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
1375      * lens position until a cancel AF trigger is received.</p>
1376      * <p>Once cancel is received, the algorithm should transition
1377      * back to INACTIVE and resume passive scan. Note that this
1378      * behavior is not identical to CONTINUOUS_PICTURE, since an
1379      * ongoing PASSIVE_SCAN must immediately be
1380      * canceled.</p>
1381      * @see CaptureRequest#CONTROL_AF_MODE
1382      */
1383     public static final int CONTROL_AF_MODE_CONTINUOUS_VIDEO = 3;
1384 
1385     /**
1386      * <p>In this mode, the AF algorithm modifies the lens
1387      * position continually to attempt to provide a
1388      * constantly-in-focus image stream.</p>
1389      * <p>The focusing behavior should be suitable for still image
1390      * capture; typically this means focusing as fast as
1391      * possible. When the AF trigger is not involved, the AF
1392      * algorithm should start in INACTIVE state, and then
1393      * transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as
1394      * appropriate as it attempts to maintain focus. When the AF
1395      * trigger is activated, the algorithm should finish its
1396      * PASSIVE_SCAN if active, and then transition into
1397      * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
1398      * lens position until a cancel AF trigger is received.</p>
1399      * <p>When the AF cancel trigger is activated, the algorithm
1400      * should transition back to INACTIVE and then act as if it
1401      * has just been started.</p>
1402      * @see CaptureRequest#CONTROL_AF_MODE
1403      */
1404     public static final int CONTROL_AF_MODE_CONTINUOUS_PICTURE = 4;
1405 
1406     /**
1407      * <p>Extended depth of field (digital focus) mode.</p>
1408      * <p>The camera device will produce images with an extended
1409      * depth of field automatically; no special focusing
1410      * operations need to be done before taking a picture.</p>
1411      * <p>AF triggers are ignored, and the AF state will always be
1412      * INACTIVE.</p>
1413      * @see CaptureRequest#CONTROL_AF_MODE
1414      */
1415     public static final int CONTROL_AF_MODE_EDOF = 5;
1416 
1417     //
1418     // Enumeration values for CaptureRequest#CONTROL_AF_TRIGGER
1419     //
1420 
1421     /**
1422      * <p>The trigger is idle.</p>
1423      * @see CaptureRequest#CONTROL_AF_TRIGGER
1424      */
1425     public static final int CONTROL_AF_TRIGGER_IDLE = 0;
1426 
1427     /**
1428      * <p>Autofocus will trigger now.</p>
1429      * @see CaptureRequest#CONTROL_AF_TRIGGER
1430      */
1431     public static final int CONTROL_AF_TRIGGER_START = 1;
1432 
1433     /**
1434      * <p>Autofocus will return to its initial
1435      * state, and cancel any currently active trigger.</p>
1436      * @see CaptureRequest#CONTROL_AF_TRIGGER
1437      */
1438     public static final int CONTROL_AF_TRIGGER_CANCEL = 2;
1439 
1440     //
1441     // Enumeration values for CaptureRequest#CONTROL_AWB_MODE
1442     //
1443 
1444     /**
1445      * <p>The camera device's auto-white balance routine is disabled.</p>
1446      * <p>The application-selected color transform matrix
1447      * ({@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}) and gains
1448      * ({@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}) are used by the camera
1449      * device for manual white balance control.</p>
1450      *
1451      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1452      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1453      * @see CaptureRequest#CONTROL_AWB_MODE
1454      */
1455     public static final int CONTROL_AWB_MODE_OFF = 0;
1456 
1457     /**
1458      * <p>The camera device's auto-white balance routine is active.</p>
1459      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1460      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1461      * For devices that support the MANUAL_POST_PROCESSING capability, the
1462      * values used by the camera device for the transform and gains
1463      * will be available in the capture result for this request.</p>
1464      *
1465      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1466      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1467      * @see CaptureRequest#CONTROL_AWB_MODE
1468      */
1469     public static final int CONTROL_AWB_MODE_AUTO = 1;
1470 
1471     /**
1472      * <p>The camera device's auto-white balance routine is disabled;
1473      * the camera device uses incandescent light as the assumed scene
1474      * illumination for white balance.</p>
1475      * <p>While the exact white balance transforms are up to the
1476      * camera device, they will approximately match the CIE
1477      * standard illuminant A.</p>
1478      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1479      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1480      * For devices that support the MANUAL_POST_PROCESSING capability, the
1481      * values used by the camera device for the transform and gains
1482      * will be available in the capture result for this request.</p>
1483      *
1484      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1485      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1486      * @see CaptureRequest#CONTROL_AWB_MODE
1487      */
1488     public static final int CONTROL_AWB_MODE_INCANDESCENT = 2;
1489 
1490     /**
1491      * <p>The camera device's auto-white balance routine is disabled;
1492      * the camera device uses fluorescent light as the assumed scene
1493      * illumination for white balance.</p>
1494      * <p>While the exact white balance transforms are up to the
1495      * camera device, they will approximately match the CIE
1496      * standard illuminant F2.</p>
1497      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1498      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1499      * For devices that support the MANUAL_POST_PROCESSING capability, the
1500      * values used by the camera device for the transform and gains
1501      * will be available in the capture result for this request.</p>
1502      *
1503      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1504      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1505      * @see CaptureRequest#CONTROL_AWB_MODE
1506      */
1507     public static final int CONTROL_AWB_MODE_FLUORESCENT = 3;
1508 
1509     /**
1510      * <p>The camera device's auto-white balance routine is disabled;
1511      * the camera device uses warm fluorescent light as the assumed scene
1512      * illumination for white balance.</p>
1513      * <p>While the exact white balance transforms are up to the
1514      * camera device, they will approximately match the CIE
1515      * standard illuminant F4.</p>
1516      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1517      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1518      * For devices that support the MANUAL_POST_PROCESSING capability, the
1519      * values used by the camera device for the transform and gains
1520      * will be available in the capture result for this request.</p>
1521      *
1522      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1523      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1524      * @see CaptureRequest#CONTROL_AWB_MODE
1525      */
1526     public static final int CONTROL_AWB_MODE_WARM_FLUORESCENT = 4;
1527 
1528     /**
1529      * <p>The camera device's auto-white balance routine is disabled;
1530      * the camera device uses daylight light as the assumed scene
1531      * illumination for white balance.</p>
1532      * <p>While the exact white balance transforms are up to the
1533      * camera device, they will approximately match the CIE
1534      * standard illuminant D65.</p>
1535      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1536      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1537      * For devices that support the MANUAL_POST_PROCESSING capability, the
1538      * values used by the camera device for the transform and gains
1539      * will be available in the capture result for this request.</p>
1540      *
1541      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1542      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1543      * @see CaptureRequest#CONTROL_AWB_MODE
1544      */
1545     public static final int CONTROL_AWB_MODE_DAYLIGHT = 5;
1546 
1547     /**
1548      * <p>The camera device's auto-white balance routine is disabled;
1549      * the camera device uses cloudy daylight light as the assumed scene
1550      * illumination for white balance.</p>
1551      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1552      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1553      * For devices that support the MANUAL_POST_PROCESSING capability, the
1554      * values used by the camera device for the transform and gains
1555      * will be available in the capture result for this request.</p>
1556      *
1557      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1558      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1559      * @see CaptureRequest#CONTROL_AWB_MODE
1560      */
1561     public static final int CONTROL_AWB_MODE_CLOUDY_DAYLIGHT = 6;
1562 
1563     /**
1564      * <p>The camera device's auto-white balance routine is disabled;
1565      * the camera device uses twilight light as the assumed scene
1566      * illumination for white balance.</p>
1567      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1568      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1569      * For devices that support the MANUAL_POST_PROCESSING capability, the
1570      * values used by the camera device for the transform and gains
1571      * will be available in the capture result for this request.</p>
1572      *
1573      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1574      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1575      * @see CaptureRequest#CONTROL_AWB_MODE
1576      */
1577     public static final int CONTROL_AWB_MODE_TWILIGHT = 7;
1578 
1579     /**
1580      * <p>The camera device's auto-white balance routine is disabled;
1581      * the camera device uses shade light as the assumed scene
1582      * illumination for white balance.</p>
1583      * <p>The application's values for {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}
1584      * and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} are ignored.
1585      * For devices that support the MANUAL_POST_PROCESSING capability, the
1586      * values used by the camera device for the transform and gains
1587      * will be available in the capture result for this request.</p>
1588      *
1589      * @see CaptureRequest#COLOR_CORRECTION_GAINS
1590      * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
1591      * @see CaptureRequest#CONTROL_AWB_MODE
1592      */
1593     public static final int CONTROL_AWB_MODE_SHADE = 8;
1594 
1595     //
1596     // Enumeration values for CaptureRequest#CONTROL_CAPTURE_INTENT
1597     //
1598 
1599     /**
1600      * <p>The goal of this request doesn't fall into the other
1601      * categories. The camera device will default to preview-like
1602      * behavior.</p>
1603      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1604      */
1605     public static final int CONTROL_CAPTURE_INTENT_CUSTOM = 0;
1606 
1607     /**
1608      * <p>This request is for a preview-like use case.</p>
1609      * <p>The precapture trigger may be used to start off a metering
1610      * w/flash sequence.</p>
1611      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1612      */
1613     public static final int CONTROL_CAPTURE_INTENT_PREVIEW = 1;
1614 
1615     /**
1616      * <p>This request is for a still capture-type
1617      * use case.</p>
1618      * <p>If the flash unit is under automatic control, it may fire as needed.</p>
1619      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1620      */
1621     public static final int CONTROL_CAPTURE_INTENT_STILL_CAPTURE = 2;
1622 
1623     /**
1624      * <p>This request is for a video recording
1625      * use case.</p>
1626      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1627      */
1628     public static final int CONTROL_CAPTURE_INTENT_VIDEO_RECORD = 3;
1629 
1630     /**
1631      * <p>This request is for a video snapshot (still
1632      * image while recording video) use case.</p>
1633      * <p>The camera device should take the highest-quality image
1634      * possible (given the other settings) without disrupting the
1635      * frame rate of video recording.  </p>
1636      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1637      */
1638     public static final int CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT = 4;
1639 
1640     /**
1641      * <p>This request is for a ZSL usecase; the
1642      * application will stream full-resolution images and
1643      * reprocess one or several later for a final
1644      * capture.</p>
1645      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1646      */
1647     public static final int CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG = 5;
1648 
1649     /**
1650      * <p>This request is for manual capture use case where
1651      * the applications want to directly control the capture parameters.</p>
1652      * <p>For example, the application may wish to manually control
1653      * {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}, {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, etc.</p>
1654      *
1655      * @see CaptureRequest#SENSOR_EXPOSURE_TIME
1656      * @see CaptureRequest#SENSOR_SENSITIVITY
1657      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1658      */
1659     public static final int CONTROL_CAPTURE_INTENT_MANUAL = 6;
1660 
1661     //
1662     // Enumeration values for CaptureRequest#CONTROL_EFFECT_MODE
1663     //
1664 
1665     /**
1666      * <p>No color effect will be applied.</p>
1667      * @see CaptureRequest#CONTROL_EFFECT_MODE
1668      */
1669     public static final int CONTROL_EFFECT_MODE_OFF = 0;
1670 
1671     /**
1672      * <p>A "monocolor" effect where the image is mapped into
1673      * a single color.</p>
1674      * <p>This will typically be grayscale.</p>
1675      * @see CaptureRequest#CONTROL_EFFECT_MODE
1676      */
1677     public static final int CONTROL_EFFECT_MODE_MONO = 1;
1678 
1679     /**
1680      * <p>A "photo-negative" effect where the image's colors
1681      * are inverted.</p>
1682      * @see CaptureRequest#CONTROL_EFFECT_MODE
1683      */
1684     public static final int CONTROL_EFFECT_MODE_NEGATIVE = 2;
1685 
1686     /**
1687      * <p>A "solarisation" effect (Sabattier effect) where the
1688      * image is wholly or partially reversed in
1689      * tone.</p>
1690      * @see CaptureRequest#CONTROL_EFFECT_MODE
1691      */
1692     public static final int CONTROL_EFFECT_MODE_SOLARIZE = 3;
1693 
1694     /**
1695      * <p>A "sepia" effect where the image is mapped into warm
1696      * gray, red, and brown tones.</p>
1697      * @see CaptureRequest#CONTROL_EFFECT_MODE
1698      */
1699     public static final int CONTROL_EFFECT_MODE_SEPIA = 4;
1700 
1701     /**
1702      * <p>A "posterization" effect where the image uses
1703      * discrete regions of tone rather than a continuous
1704      * gradient of tones.</p>
1705      * @see CaptureRequest#CONTROL_EFFECT_MODE
1706      */
1707     public static final int CONTROL_EFFECT_MODE_POSTERIZE = 5;
1708 
1709     /**
1710      * <p>A "whiteboard" effect where the image is typically displayed
1711      * as regions of white, with black or grey details.</p>
1712      * @see CaptureRequest#CONTROL_EFFECT_MODE
1713      */
1714     public static final int CONTROL_EFFECT_MODE_WHITEBOARD = 6;
1715 
1716     /**
1717      * <p>A "blackboard" effect where the image is typically displayed
1718      * as regions of black, with white or grey details.</p>
1719      * @see CaptureRequest#CONTROL_EFFECT_MODE
1720      */
1721     public static final int CONTROL_EFFECT_MODE_BLACKBOARD = 7;
1722 
1723     /**
1724      * <p>An "aqua" effect where a blue hue is added to the image.</p>
1725      * @see CaptureRequest#CONTROL_EFFECT_MODE
1726      */
1727     public static final int CONTROL_EFFECT_MODE_AQUA = 8;
1728 
1729     //
1730     // Enumeration values for CaptureRequest#CONTROL_MODE
1731     //
1732 
1733     /**
1734      * <p>Full application control of pipeline.</p>
1735      * <p>All control by the device's metering and focusing (3A)
1736      * routines is disabled, and no other settings in
1737      * android.control.* have any effect, except that
1738      * {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} may be used by the camera
1739      * device to select post-processing values for processing
1740      * blocks that do not allow for manual control, or are not
1741      * exposed by the camera API.</p>
1742      * <p>However, the camera device's 3A routines may continue to
1743      * collect statistics and update their internal state so that
1744      * when control is switched to AUTO mode, good control values
1745      * can be immediately applied.</p>
1746      *
1747      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
1748      * @see CaptureRequest#CONTROL_MODE
1749      */
1750     public static final int CONTROL_MODE_OFF = 0;
1751 
1752     /**
1753      * <p>Use settings for each individual 3A routine.</p>
1754      * <p>Manual control of capture parameters is disabled. All
1755      * controls in android.control.* besides sceneMode take
1756      * effect.</p>
1757      * @see CaptureRequest#CONTROL_MODE
1758      */
1759     public static final int CONTROL_MODE_AUTO = 1;
1760 
1761     /**
1762      * <p>Use a specific scene mode.</p>
1763      * <p>Enabling this disables control.aeMode, control.awbMode and
1764      * control.afMode controls; the camera device will ignore
1765      * those settings while USE_SCENE_MODE is active (except for
1766      * FACE_PRIORITY scene mode). Other control entries are still active.
1767      * This setting can only be used if scene mode is supported (i.e.
1768      * {@link CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES android.control.availableSceneModes}
1769      * contain some modes other than DISABLED).</p>
1770      *
1771      * @see CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES
1772      * @see CaptureRequest#CONTROL_MODE
1773      */
1774     public static final int CONTROL_MODE_USE_SCENE_MODE = 2;
1775 
1776     /**
1777      * <p>Same as OFF mode, except that this capture will not be
1778      * used by camera device background auto-exposure, auto-white balance and
1779      * auto-focus algorithms (3A) to update their statistics.</p>
1780      * <p>Specifically, the 3A routines are locked to the last
1781      * values set from a request with AUTO, OFF, or
1782      * USE_SCENE_MODE, and any statistics or state updates
1783      * collected from manual captures with OFF_KEEP_STATE will be
1784      * discarded by the camera device.</p>
1785      * @see CaptureRequest#CONTROL_MODE
1786      */
1787     public static final int CONTROL_MODE_OFF_KEEP_STATE = 3;
1788 
1789     //
1790     // Enumeration values for CaptureRequest#CONTROL_SCENE_MODE
1791     //
1792 
1793     /**
1794      * <p>Indicates that no scene modes are set for a given capture request.</p>
1795      * @see CaptureRequest#CONTROL_SCENE_MODE
1796      */
1797     public static final int CONTROL_SCENE_MODE_DISABLED = 0;
1798 
1799     /**
1800      * <p>If face detection support exists, use face
1801      * detection data for auto-focus, auto-white balance, and
1802      * auto-exposure routines.</p>
1803      * <p>If face detection statistics are disabled
1804      * (i.e. {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} is set to OFF),
1805      * this should still operate correctly (but will not return
1806      * face detection statistics to the framework).</p>
1807      * <p>Unlike the other scene modes, {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode},
1808      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
1809      * remain active when FACE_PRIORITY is set.</p>
1810      *
1811      * @see CaptureRequest#CONTROL_AE_MODE
1812      * @see CaptureRequest#CONTROL_AF_MODE
1813      * @see CaptureRequest#CONTROL_AWB_MODE
1814      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
1815      * @see CaptureRequest#CONTROL_SCENE_MODE
1816      */
1817     public static final int CONTROL_SCENE_MODE_FACE_PRIORITY = 1;
1818 
1819     /**
1820      * <p>Optimized for photos of quickly moving objects.</p>
1821      * <p>Similar to SPORTS.</p>
1822      * @see CaptureRequest#CONTROL_SCENE_MODE
1823      */
1824     public static final int CONTROL_SCENE_MODE_ACTION = 2;
1825 
1826     /**
1827      * <p>Optimized for still photos of people.</p>
1828      * @see CaptureRequest#CONTROL_SCENE_MODE
1829      */
1830     public static final int CONTROL_SCENE_MODE_PORTRAIT = 3;
1831 
1832     /**
1833      * <p>Optimized for photos of distant macroscopic objects.</p>
1834      * @see CaptureRequest#CONTROL_SCENE_MODE
1835      */
1836     public static final int CONTROL_SCENE_MODE_LANDSCAPE = 4;
1837 
1838     /**
1839      * <p>Optimized for low-light settings.</p>
1840      * @see CaptureRequest#CONTROL_SCENE_MODE
1841      */
1842     public static final int CONTROL_SCENE_MODE_NIGHT = 5;
1843 
1844     /**
1845      * <p>Optimized for still photos of people in low-light
1846      * settings.</p>
1847      * @see CaptureRequest#CONTROL_SCENE_MODE
1848      */
1849     public static final int CONTROL_SCENE_MODE_NIGHT_PORTRAIT = 6;
1850 
1851     /**
1852      * <p>Optimized for dim, indoor settings where flash must
1853      * remain off.</p>
1854      * @see CaptureRequest#CONTROL_SCENE_MODE
1855      */
1856     public static final int CONTROL_SCENE_MODE_THEATRE = 7;
1857 
1858     /**
1859      * <p>Optimized for bright, outdoor beach settings.</p>
1860      * @see CaptureRequest#CONTROL_SCENE_MODE
1861      */
1862     public static final int CONTROL_SCENE_MODE_BEACH = 8;
1863 
1864     /**
1865      * <p>Optimized for bright, outdoor settings containing snow.</p>
1866      * @see CaptureRequest#CONTROL_SCENE_MODE
1867      */
1868     public static final int CONTROL_SCENE_MODE_SNOW = 9;
1869 
1870     /**
1871      * <p>Optimized for scenes of the setting sun.</p>
1872      * @see CaptureRequest#CONTROL_SCENE_MODE
1873      */
1874     public static final int CONTROL_SCENE_MODE_SUNSET = 10;
1875 
1876     /**
1877      * <p>Optimized to avoid blurry photos due to small amounts of
1878      * device motion (for example: due to hand shake).</p>
1879      * @see CaptureRequest#CONTROL_SCENE_MODE
1880      */
1881     public static final int CONTROL_SCENE_MODE_STEADYPHOTO = 11;
1882 
1883     /**
1884      * <p>Optimized for nighttime photos of fireworks.</p>
1885      * @see CaptureRequest#CONTROL_SCENE_MODE
1886      */
1887     public static final int CONTROL_SCENE_MODE_FIREWORKS = 12;
1888 
1889     /**
1890      * <p>Optimized for photos of quickly moving people.</p>
1891      * <p>Similar to ACTION.</p>
1892      * @see CaptureRequest#CONTROL_SCENE_MODE
1893      */
1894     public static final int CONTROL_SCENE_MODE_SPORTS = 13;
1895 
1896     /**
1897      * <p>Optimized for dim, indoor settings with multiple moving
1898      * people.</p>
1899      * @see CaptureRequest#CONTROL_SCENE_MODE
1900      */
1901     public static final int CONTROL_SCENE_MODE_PARTY = 14;
1902 
1903     /**
1904      * <p>Optimized for dim settings where the main light source
1905      * is a flame.</p>
1906      * @see CaptureRequest#CONTROL_SCENE_MODE
1907      */
1908     public static final int CONTROL_SCENE_MODE_CANDLELIGHT = 15;
1909 
1910     /**
1911      * <p>Optimized for accurately capturing a photo of barcode
1912      * for use by camera applications that wish to read the
1913      * barcode value.</p>
1914      * @see CaptureRequest#CONTROL_SCENE_MODE
1915      */
1916     public static final int CONTROL_SCENE_MODE_BARCODE = 16;
1917 
1918     /**
1919      * <p>This is deprecated, please use {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }
1920      * and {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList }
1921      * for high speed video recording.</p>
1922      * <p>Optimized for high speed video recording (frame rate &gt;=60fps) use case.</p>
1923      * <p>The supported high speed video sizes and fps ranges are specified in
1924      * android.control.availableHighSpeedVideoConfigurations. To get desired
1925      * output frame rates, the application is only allowed to select video size
1926      * and fps range combinations listed in this static metadata. The fps range
1927      * can be control via {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}.</p>
1928      * <p>In this mode, the camera device will override aeMode, awbMode, and afMode to
1929      * ON, ON, and CONTINUOUS_VIDEO, respectively. All post-processing block mode
1930      * controls will be overridden to be FAST. Therefore, no manual control of capture
1931      * and post-processing parameters is possible. All other controls operate the
1932      * same as when {@link CaptureRequest#CONTROL_MODE android.control.mode} == AUTO. This means that all other
1933      * android.control.* fields continue to work, such as</p>
1934      * <ul>
1935      * <li>{@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange}</li>
1936      * <li>{@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}</li>
1937      * <li>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</li>
1938      * <li>{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</li>
1939      * <li>{@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode}</li>
1940      * <li>{@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}</li>
1941      * <li>{@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}</li>
1942      * <li>{@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions}</li>
1943      * <li>{@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}</li>
1944      * <li>{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}</li>
1945      * </ul>
1946      * <p>Outside of android.control.*, the following controls will work:</p>
1947      * <ul>
1948      * <li>{@link CaptureRequest#FLASH_MODE android.flash.mode} (automatic flash for still capture will not work since aeMode is ON)</li>
1949      * <li>{@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode} (if it is supported)</li>
1950      * <li>{@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}</li>
1951      * <li>{@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode}</li>
1952      * </ul>
1953      * <p>For high speed recording use case, the actual maximum supported frame rate may
1954      * be lower than what camera can output, depending on the destination Surfaces for
1955      * the image data. For example, if the destination surface is from video encoder,
1956      * the application need check if the video encoder is capable of supporting the
1957      * high frame rate for a given video size, or it will end up with lower recording
1958      * frame rate. If the destination surface is from preview window, the preview frame
1959      * rate will be bounded by the screen refresh rate.</p>
1960      * <p>The camera device will only support up to 2 output high speed streams
1961      * (processed non-stalling format defined in android.request.maxNumOutputStreams)
1962      * in this mode. This control will be effective only if all of below conditions are true:</p>
1963      * <ul>
1964      * <li>The application created no more than maxNumHighSpeedStreams processed non-stalling
1965      * format output streams, where maxNumHighSpeedStreams is calculated as
1966      * min(2, android.request.maxNumOutputStreams[Processed (but not-stalling)]).</li>
1967      * <li>The stream sizes are selected from the sizes reported by
1968      * android.control.availableHighSpeedVideoConfigurations.</li>
1969      * <li>No processed non-stalling or raw streams are configured.</li>
1970      * </ul>
1971      * <p>When above conditions are NOT satistied, the controls of this mode and
1972      * {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange} will be ignored by the camera device,
1973      * the camera device will fall back to {@link CaptureRequest#CONTROL_MODE android.control.mode} <code>==</code> AUTO,
1974      * and the returned capture result metadata will give the fps range choosen
1975      * by the camera device.</p>
1976      * <p>Switching into or out of this mode may trigger some camera ISP/sensor
1977      * reconfigurations, which may introduce extra latency. It is recommended that
1978      * the application avoids unnecessary scene mode switch as much as possible.</p>
1979      *
1980      * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
1981      * @see CaptureRequest#CONTROL_AE_LOCK
1982      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
1983      * @see CaptureRequest#CONTROL_AE_REGIONS
1984      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
1985      * @see CaptureRequest#CONTROL_AF_REGIONS
1986      * @see CaptureRequest#CONTROL_AF_TRIGGER
1987      * @see CaptureRequest#CONTROL_AWB_LOCK
1988      * @see CaptureRequest#CONTROL_AWB_REGIONS
1989      * @see CaptureRequest#CONTROL_EFFECT_MODE
1990      * @see CaptureRequest#CONTROL_MODE
1991      * @see CaptureRequest#FLASH_MODE
1992      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
1993      * @see CaptureRequest#SCALER_CROP_REGION
1994      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
1995      * @see CaptureRequest#CONTROL_SCENE_MODE
1996      * @deprecated Please refer to this API documentation to find the alternatives
1997      */
1998     public static final int CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO = 17;
1999 
2000     /**
2001      * <p>Turn on a device-specific high dynamic range (HDR) mode.</p>
2002      * <p>In this scene mode, the camera device captures images
2003      * that keep a larger range of scene illumination levels
2004      * visible in the final image. For example, when taking a
2005      * picture of a object in front of a bright window, both
2006      * the object and the scene through the window may be
2007      * visible when using HDR mode, while in normal AUTO mode,
2008      * one or the other may be poorly exposed. As a tradeoff,
2009      * HDR mode generally takes much longer to capture a single
2010      * image, has no user control, and may have other artifacts
2011      * depending on the HDR method used.</p>
2012      * <p>Therefore, HDR captures operate at a much slower rate
2013      * than regular captures.</p>
2014      * <p>In this mode, on LIMITED or FULL devices, when a request
2015      * is made with a {@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} of
2016      * STILL_CAPTURE, the camera device will capture an image
2017      * using a high dynamic range capture technique.  On LEGACY
2018      * devices, captures that target a JPEG-format output will
2019      * be captured with HDR, and the capture intent is not
2020      * relevant.</p>
2021      * <p>The HDR capture may involve the device capturing a burst
2022      * of images internally and combining them into one, or it
2023      * may involve the device using specialized high dynamic
2024      * range capture hardware. In all cases, a single image is
2025      * produced in response to a capture request submitted
2026      * while in HDR mode.</p>
2027      * <p>Since substantial post-processing is generally needed to
2028      * produce an HDR image, only YUV, PRIVATE, and JPEG
2029      * outputs are supported for LIMITED/FULL device HDR
2030      * captures, and only JPEG outputs are supported for LEGACY
2031      * HDR captures. Using a RAW output for HDR capture is not
2032      * supported.</p>
2033      * <p>Some devices may also support always-on HDR, which
2034      * applies HDR processing at full frame rate.  For these
2035      * devices, intents other than STILL_CAPTURE will also
2036      * produce an HDR output with no frame rate impact compared
2037      * to normal operation, though the quality may be lower
2038      * than for STILL_CAPTURE intents.</p>
2039      * <p>If SCENE_MODE_HDR is used with unsupported output types
2040      * or capture intents, the images captured will be as if
2041      * the SCENE_MODE was not enabled at all.</p>
2042      *
2043      * @see CaptureRequest#CONTROL_CAPTURE_INTENT
2044      * @see CaptureRequest#CONTROL_SCENE_MODE
2045      */
2046     public static final int CONTROL_SCENE_MODE_HDR = 18;
2047 
2048     /**
2049      * <p>Same as FACE_PRIORITY scene mode, except that the camera
2050      * device will choose higher sensitivity values ({@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity})
2051      * under low light conditions.</p>
2052      * <p>The camera device may be tuned to expose the images in a reduced
2053      * sensitivity range to produce the best quality images. For example,
2054      * if the {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange} gives range of [100, 1600],
2055      * the camera device auto-exposure routine tuning process may limit the actual
2056      * exposure sensitivity range to [100, 1200] to ensure that the noise level isn't
2057      * exessive in order to preserve the image quality. Under this situation, the image under
2058      * low light may be under-exposed when the sensor max exposure time (bounded by the
2059      * {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange} when {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is one of the
2060      * ON_* modes) and effective max sensitivity are reached. This scene mode allows the
2061      * camera device auto-exposure routine to increase the sensitivity up to the max
2062      * sensitivity specified by {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange} when the scene is too
2063      * dark and the max exposure time is reached. The captured images may be noisier
2064      * compared with the images captured in normal FACE_PRIORITY mode; therefore, it is
2065      * recommended that the application only use this scene mode when it is capable of
2066      * reducing the noise level of the captured images.</p>
2067      * <p>Unlike the other scene modes, {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode},
2068      * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
2069      * remain active when FACE_PRIORITY_LOW_LIGHT is set.</p>
2070      *
2071      * @see CaptureRequest#CONTROL_AE_MODE
2072      * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
2073      * @see CaptureRequest#CONTROL_AF_MODE
2074      * @see CaptureRequest#CONTROL_AWB_MODE
2075      * @see CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
2076      * @see CaptureRequest#SENSOR_SENSITIVITY
2077      * @see CaptureRequest#CONTROL_SCENE_MODE
2078      * @hide
2079      */
2080     public static final int CONTROL_SCENE_MODE_FACE_PRIORITY_LOW_LIGHT = 19;
2081 
2082     /**
2083      * <p>Scene mode values within the range of
2084      * <code>[DEVICE_CUSTOM_START, DEVICE_CUSTOM_END]</code> are reserved for device specific
2085      * customized scene modes.</p>
2086      * @see CaptureRequest#CONTROL_SCENE_MODE
2087      * @hide
2088      */
2089     public static final int CONTROL_SCENE_MODE_DEVICE_CUSTOM_START = 100;
2090 
2091     /**
2092      * <p>Scene mode values within the range of
2093      * <code>[DEVICE_CUSTOM_START, DEVICE_CUSTOM_END]</code> are reserved for device specific
2094      * customized scene modes.</p>
2095      * @see CaptureRequest#CONTROL_SCENE_MODE
2096      * @hide
2097      */
2098     public static final int CONTROL_SCENE_MODE_DEVICE_CUSTOM_END = 127;
2099 
2100     //
2101     // Enumeration values for CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2102     //
2103 
2104     /**
2105      * <p>Video stabilization is disabled.</p>
2106      * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2107      */
2108     public static final int CONTROL_VIDEO_STABILIZATION_MODE_OFF = 0;
2109 
2110     /**
2111      * <p>Video stabilization is enabled.</p>
2112      * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
2113      */
2114     public static final int CONTROL_VIDEO_STABILIZATION_MODE_ON = 1;
2115 
2116     //
2117     // Enumeration values for CaptureRequest#EDGE_MODE
2118     //
2119 
2120     /**
2121      * <p>No edge enhancement is applied.</p>
2122      * @see CaptureRequest#EDGE_MODE
2123      */
2124     public static final int EDGE_MODE_OFF = 0;
2125 
2126     /**
2127      * <p>Apply edge enhancement at a quality level that does not slow down frame rate
2128      * relative to sensor output. It may be the same as OFF if edge enhancement will
2129      * slow down frame rate relative to sensor.</p>
2130      * @see CaptureRequest#EDGE_MODE
2131      */
2132     public static final int EDGE_MODE_FAST = 1;
2133 
2134     /**
2135      * <p>Apply high-quality edge enhancement, at a cost of possibly reduced output frame rate.</p>
2136      * @see CaptureRequest#EDGE_MODE
2137      */
2138     public static final int EDGE_MODE_HIGH_QUALITY = 2;
2139 
2140     /**
2141      * <p>Edge enhancement is applied at different levels for different output streams,
2142      * based on resolution. Streams at maximum recording resolution (see {@link android.hardware.camera2.CameraDevice#createCaptureSession }) or below have
2143      * edge enhancement applied, while higher-resolution streams have no edge enhancement
2144      * applied. The level of edge enhancement for low-resolution streams is tuned so that
2145      * frame rate is not impacted, and the quality is equal to or better than FAST (since it
2146      * is only applied to lower-resolution outputs, quality may improve from FAST).</p>
2147      * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
2148      * with YUV or PRIVATE reprocessing, where the application continuously captures
2149      * high-resolution intermediate buffers into a circular buffer, from which a final image is
2150      * produced via reprocessing when a user takes a picture.  For such a use case, the
2151      * high-resolution buffers must not have edge enhancement applied to maximize efficiency of
2152      * preview and to avoid double-applying enhancement when reprocessed, while low-resolution
2153      * buffers (used for recording or preview, generally) need edge enhancement applied for
2154      * reasonable preview quality.</p>
2155      * <p>This mode is guaranteed to be supported by devices that support either the
2156      * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
2157      * ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} lists either of those capabilities) and it will
2158      * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
2159      *
2160      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
2161      * @see CaptureRequest#EDGE_MODE
2162      */
2163     public static final int EDGE_MODE_ZERO_SHUTTER_LAG = 3;
2164 
2165     //
2166     // Enumeration values for CaptureRequest#FLASH_MODE
2167     //
2168 
2169     /**
2170      * <p>Do not fire the flash for this capture.</p>
2171      * @see CaptureRequest#FLASH_MODE
2172      */
2173     public static final int FLASH_MODE_OFF = 0;
2174 
2175     /**
2176      * <p>If the flash is available and charged, fire flash
2177      * for this capture.</p>
2178      * @see CaptureRequest#FLASH_MODE
2179      */
2180     public static final int FLASH_MODE_SINGLE = 1;
2181 
2182     /**
2183      * <p>Transition flash to continuously on.</p>
2184      * @see CaptureRequest#FLASH_MODE
2185      */
2186     public static final int FLASH_MODE_TORCH = 2;
2187 
2188     //
2189     // Enumeration values for CaptureRequest#HOT_PIXEL_MODE
2190     //
2191 
2192     /**
2193      * <p>No hot pixel correction is applied.</p>
2194      * <p>The frame rate must not be reduced relative to sensor raw output
2195      * for this option.</p>
2196      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2197      *
2198      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2199      * @see CaptureRequest#HOT_PIXEL_MODE
2200      */
2201     public static final int HOT_PIXEL_MODE_OFF = 0;
2202 
2203     /**
2204      * <p>Hot pixel correction is applied, without reducing frame
2205      * rate relative to sensor raw output.</p>
2206      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2207      *
2208      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2209      * @see CaptureRequest#HOT_PIXEL_MODE
2210      */
2211     public static final int HOT_PIXEL_MODE_FAST = 1;
2212 
2213     /**
2214      * <p>High-quality hot pixel correction is applied, at a cost
2215      * of possibly reduced frame rate relative to sensor raw output.</p>
2216      * <p>The hotpixel map may be returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.</p>
2217      *
2218      * @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
2219      * @see CaptureRequest#HOT_PIXEL_MODE
2220      */
2221     public static final int HOT_PIXEL_MODE_HIGH_QUALITY = 2;
2222 
2223     //
2224     // Enumeration values for CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2225     //
2226 
2227     /**
2228      * <p>Optical stabilization is unavailable.</p>
2229      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2230      */
2231     public static final int LENS_OPTICAL_STABILIZATION_MODE_OFF = 0;
2232 
2233     /**
2234      * <p>Optical stabilization is enabled.</p>
2235      * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
2236      */
2237     public static final int LENS_OPTICAL_STABILIZATION_MODE_ON = 1;
2238 
2239     //
2240     // Enumeration values for CaptureRequest#NOISE_REDUCTION_MODE
2241     //
2242 
2243     /**
2244      * <p>No noise reduction is applied.</p>
2245      * @see CaptureRequest#NOISE_REDUCTION_MODE
2246      */
2247     public static final int NOISE_REDUCTION_MODE_OFF = 0;
2248 
2249     /**
2250      * <p>Noise reduction is applied without reducing frame rate relative to sensor
2251      * output. It may be the same as OFF if noise reduction will reduce frame rate
2252      * relative to sensor.</p>
2253      * @see CaptureRequest#NOISE_REDUCTION_MODE
2254      */
2255     public static final int NOISE_REDUCTION_MODE_FAST = 1;
2256 
2257     /**
2258      * <p>High-quality noise reduction is applied, at the cost of possibly reduced frame
2259      * rate relative to sensor output.</p>
2260      * @see CaptureRequest#NOISE_REDUCTION_MODE
2261      */
2262     public static final int NOISE_REDUCTION_MODE_HIGH_QUALITY = 2;
2263 
2264     /**
2265      * <p>MINIMAL noise reduction is applied without reducing frame rate relative to
2266      * sensor output. </p>
2267      * @see CaptureRequest#NOISE_REDUCTION_MODE
2268      */
2269     public static final int NOISE_REDUCTION_MODE_MINIMAL = 3;
2270 
2271     /**
2272      * <p>Noise reduction is applied at different levels for different output streams,
2273      * based on resolution. Streams at maximum recording resolution (see {@link android.hardware.camera2.CameraDevice#createCaptureSession }) or below have noise
2274      * reduction applied, while higher-resolution streams have MINIMAL (if supported) or no
2275      * noise reduction applied (if MINIMAL is not supported.) The degree of noise reduction
2276      * for low-resolution streams is tuned so that frame rate is not impacted, and the quality
2277      * is equal to or better than FAST (since it is only applied to lower-resolution outputs,
2278      * quality may improve from FAST).</p>
2279      * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
2280      * with YUV or PRIVATE reprocessing, where the application continuously captures
2281      * high-resolution intermediate buffers into a circular buffer, from which a final image is
2282      * produced via reprocessing when a user takes a picture.  For such a use case, the
2283      * high-resolution buffers must not have noise reduction applied to maximize efficiency of
2284      * preview and to avoid over-applying noise filtering when reprocessing, while
2285      * low-resolution buffers (used for recording or preview, generally) need noise reduction
2286      * applied for reasonable preview quality.</p>
2287      * <p>This mode is guaranteed to be supported by devices that support either the
2288      * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
2289      * ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} lists either of those capabilities) and it will
2290      * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
2291      *
2292      * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
2293      * @see CaptureRequest#NOISE_REDUCTION_MODE
2294      */
2295     public static final int NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG = 4;
2296 
2297     //
2298     // Enumeration values for CaptureRequest#SENSOR_TEST_PATTERN_MODE
2299     //
2300 
2301     /**
2302      * <p>No test pattern mode is used, and the camera
2303      * device returns captures from the image sensor.</p>
2304      * <p>This is the default if the key is not set.</p>
2305      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2306      */
2307     public static final int SENSOR_TEST_PATTERN_MODE_OFF = 0;
2308 
2309     /**
2310      * <p>Each pixel in <code>[R, G_even, G_odd, B]</code> is replaced by its
2311      * respective color channel provided in
2312      * {@link CaptureRequest#SENSOR_TEST_PATTERN_DATA android.sensor.testPatternData}.</p>
2313      * <p>For example:</p>
2314      * <pre><code>android.testPatternData = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0]
2315      * </code></pre>
2316      * <p>All green pixels are 100% green. All red/blue pixels are black.</p>
2317      * <pre><code>android.testPatternData = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0]
2318      * </code></pre>
2319      * <p>All red pixels are 100% red. Only the odd green pixels
2320      * are 100% green. All blue pixels are 100% black.</p>
2321      *
2322      * @see CaptureRequest#SENSOR_TEST_PATTERN_DATA
2323      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2324      */
2325     public static final int SENSOR_TEST_PATTERN_MODE_SOLID_COLOR = 1;
2326 
2327     /**
2328      * <p>All pixel data is replaced with an 8-bar color pattern.</p>
2329      * <p>The vertical bars (left-to-right) are as follows:</p>
2330      * <ul>
2331      * <li>100% white</li>
2332      * <li>yellow</li>
2333      * <li>cyan</li>
2334      * <li>green</li>
2335      * <li>magenta</li>
2336      * <li>red</li>
2337      * <li>blue</li>
2338      * <li>black</li>
2339      * </ul>
2340      * <p>In general the image would look like the following:</p>
2341      * <pre><code>W Y C G M R B K
2342      * W Y C G M R B K
2343      * W Y C G M R B K
2344      * W Y C G M R B K
2345      * W Y C G M R B K
2346      * . . . . . . . .
2347      * . . . . . . . .
2348      * . . . . . . . .
2349      *
2350      * (B = Blue, K = Black)
2351      * </code></pre>
2352      * <p>Each bar should take up 1/8 of the sensor pixel array width.
2353      * When this is not possible, the bar size should be rounded
2354      * down to the nearest integer and the pattern can repeat
2355      * on the right side.</p>
2356      * <p>Each bar's height must always take up the full sensor
2357      * pixel array height.</p>
2358      * <p>Each pixel in this test pattern must be set to either
2359      * 0% intensity or 100% intensity.</p>
2360      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2361      */
2362     public static final int SENSOR_TEST_PATTERN_MODE_COLOR_BARS = 2;
2363 
2364     /**
2365      * <p>The test pattern is similar to COLOR_BARS, except that
2366      * each bar should start at its specified color at the top,
2367      * and fade to gray at the bottom.</p>
2368      * <p>Furthermore each bar is further subdivided into a left and
2369      * right half. The left half should have a smooth gradient,
2370      * and the right half should have a quantized gradient.</p>
2371      * <p>In particular, the right half's should consist of blocks of the
2372      * same color for 1/16th active sensor pixel array width.</p>
2373      * <p>The least significant bits in the quantized gradient should
2374      * be copied from the most significant bits of the smooth gradient.</p>
2375      * <p>The height of each bar should always be a multiple of 128.
2376      * When this is not the case, the pattern should repeat at the bottom
2377      * of the image.</p>
2378      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2379      */
2380     public static final int SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY = 3;
2381 
2382     /**
2383      * <p>All pixel data is replaced by a pseudo-random sequence
2384      * generated from a PN9 512-bit sequence (typically implemented
2385      * in hardware with a linear feedback shift register).</p>
2386      * <p>The generator should be reset at the beginning of each frame,
2387      * and thus each subsequent raw frame with this test pattern should
2388      * be exactly the same as the last.</p>
2389      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2390      */
2391     public static final int SENSOR_TEST_PATTERN_MODE_PN9 = 4;
2392 
2393     /**
2394      * <p>The first custom test pattern. All custom patterns that are
2395      * available only on this camera device are at least this numeric
2396      * value.</p>
2397      * <p>All of the custom test patterns will be static
2398      * (that is the raw image must not vary from frame to frame).</p>
2399      * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
2400      */
2401     public static final int SENSOR_TEST_PATTERN_MODE_CUSTOM1 = 256;
2402 
2403     //
2404     // Enumeration values for CaptureRequest#SHADING_MODE
2405     //
2406 
2407     /**
2408      * <p>No lens shading correction is applied.</p>
2409      * @see CaptureRequest#SHADING_MODE
2410      */
2411     public static final int SHADING_MODE_OFF = 0;
2412 
2413     /**
2414      * <p>Apply lens shading corrections, without slowing
2415      * frame rate relative to sensor raw output</p>
2416      * @see CaptureRequest#SHADING_MODE
2417      */
2418     public static final int SHADING_MODE_FAST = 1;
2419 
2420     /**
2421      * <p>Apply high-quality lens shading correction, at the
2422      * cost of possibly reduced frame rate.</p>
2423      * @see CaptureRequest#SHADING_MODE
2424      */
2425     public static final int SHADING_MODE_HIGH_QUALITY = 2;
2426 
2427     //
2428     // Enumeration values for CaptureRequest#STATISTICS_FACE_DETECT_MODE
2429     //
2430 
2431     /**
2432      * <p>Do not include face detection statistics in capture
2433      * results.</p>
2434      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2435      */
2436     public static final int STATISTICS_FACE_DETECT_MODE_OFF = 0;
2437 
2438     /**
2439      * <p>Return face rectangle and confidence values only.</p>
2440      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2441      */
2442     public static final int STATISTICS_FACE_DETECT_MODE_SIMPLE = 1;
2443 
2444     /**
2445      * <p>Return all face
2446      * metadata.</p>
2447      * <p>In this mode, face rectangles, scores, landmarks, and face IDs are all valid.</p>
2448      * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
2449      */
2450     public static final int STATISTICS_FACE_DETECT_MODE_FULL = 2;
2451 
2452     //
2453     // Enumeration values for CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2454     //
2455 
2456     /**
2457      * <p>Do not include a lens shading map in the capture result.</p>
2458      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2459      */
2460     public static final int STATISTICS_LENS_SHADING_MAP_MODE_OFF = 0;
2461 
2462     /**
2463      * <p>Include a lens shading map in the capture result.</p>
2464      * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
2465      */
2466     public static final int STATISTICS_LENS_SHADING_MAP_MODE_ON = 1;
2467 
2468     //
2469     // Enumeration values for CaptureRequest#TONEMAP_MODE
2470     //
2471 
2472     /**
2473      * <p>Use the tone mapping curve specified in
2474      * the {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}* entries.</p>
2475      * <p>All color enhancement and tonemapping must be disabled, except
2476      * for applying the tonemapping curve specified by
2477      * {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}.</p>
2478      * <p>Must not slow down frame rate relative to raw
2479      * sensor output.</p>
2480      *
2481      * @see CaptureRequest#TONEMAP_CURVE
2482      * @see CaptureRequest#TONEMAP_MODE
2483      */
2484     public static final int TONEMAP_MODE_CONTRAST_CURVE = 0;
2485 
2486     /**
2487      * <p>Advanced gamma mapping and color enhancement may be applied, without
2488      * reducing frame rate compared to raw sensor output.</p>
2489      * @see CaptureRequest#TONEMAP_MODE
2490      */
2491     public static final int TONEMAP_MODE_FAST = 1;
2492 
2493     /**
2494      * <p>High-quality gamma mapping and color enhancement will be applied, at
2495      * the cost of possibly reduced frame rate compared to raw sensor output.</p>
2496      * @see CaptureRequest#TONEMAP_MODE
2497      */
2498     public static final int TONEMAP_MODE_HIGH_QUALITY = 2;
2499 
2500     /**
2501      * <p>Use the gamma value specified in {@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma} to peform
2502      * tonemapping.</p>
2503      * <p>All color enhancement and tonemapping must be disabled, except
2504      * for applying the tonemapping curve specified by {@link CaptureRequest#TONEMAP_GAMMA android.tonemap.gamma}.</p>
2505      * <p>Must not slow down frame rate relative to raw sensor output.</p>
2506      *
2507      * @see CaptureRequest#TONEMAP_GAMMA
2508      * @see CaptureRequest#TONEMAP_MODE
2509      */
2510     public static final int TONEMAP_MODE_GAMMA_VALUE = 3;
2511 
2512     /**
2513      * <p>Use the preset tonemapping curve specified in
2514      * {@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve} to peform tonemapping.</p>
2515      * <p>All color enhancement and tonemapping must be disabled, except
2516      * for applying the tonemapping curve specified by
2517      * {@link CaptureRequest#TONEMAP_PRESET_CURVE android.tonemap.presetCurve}.</p>
2518      * <p>Must not slow down frame rate relative to raw sensor output.</p>
2519      *
2520      * @see CaptureRequest#TONEMAP_PRESET_CURVE
2521      * @see CaptureRequest#TONEMAP_MODE
2522      */
2523     public static final int TONEMAP_MODE_PRESET_CURVE = 4;
2524 
2525     //
2526     // Enumeration values for CaptureRequest#TONEMAP_PRESET_CURVE
2527     //
2528 
2529     /**
2530      * <p>Tonemapping curve is defined by sRGB</p>
2531      * @see CaptureRequest#TONEMAP_PRESET_CURVE
2532      */
2533     public static final int TONEMAP_PRESET_CURVE_SRGB = 0;
2534 
2535     /**
2536      * <p>Tonemapping curve is defined by ITU-R BT.709</p>
2537      * @see CaptureRequest#TONEMAP_PRESET_CURVE
2538      */
2539     public static final int TONEMAP_PRESET_CURVE_REC709 = 1;
2540 
2541     //
2542     // Enumeration values for CaptureResult#CONTROL_AE_STATE
2543     //
2544 
2545     /**
2546      * <p>AE is off or recently reset.</p>
2547      * <p>When a camera device is opened, it starts in
2548      * this state. This is a transient state, the camera device may skip reporting
2549      * this state in capture result.</p>
2550      * @see CaptureResult#CONTROL_AE_STATE
2551      */
2552     public static final int CONTROL_AE_STATE_INACTIVE = 0;
2553 
2554     /**
2555      * <p>AE doesn't yet have a good set of control values
2556      * for the current scene.</p>
2557      * <p>This is a transient state, the camera device may skip
2558      * reporting this state in capture result.</p>
2559      * @see CaptureResult#CONTROL_AE_STATE
2560      */
2561     public static final int CONTROL_AE_STATE_SEARCHING = 1;
2562 
2563     /**
2564      * <p>AE has a good set of control values for the
2565      * current scene.</p>
2566      * @see CaptureResult#CONTROL_AE_STATE
2567      */
2568     public static final int CONTROL_AE_STATE_CONVERGED = 2;
2569 
2570     /**
2571      * <p>AE has been locked.</p>
2572      * @see CaptureResult#CONTROL_AE_STATE
2573      */
2574     public static final int CONTROL_AE_STATE_LOCKED = 3;
2575 
2576     /**
2577      * <p>AE has a good set of control values, but flash
2578      * needs to be fired for good quality still
2579      * capture.</p>
2580      * @see CaptureResult#CONTROL_AE_STATE
2581      */
2582     public static final int CONTROL_AE_STATE_FLASH_REQUIRED = 4;
2583 
2584     /**
2585      * <p>AE has been asked to do a precapture sequence
2586      * and is currently executing it.</p>
2587      * <p>Precapture can be triggered through setting
2588      * {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} to START. Currently
2589      * active and completed (if it causes camera device internal AE lock) precapture
2590      * metering sequence can be canceled through setting
2591      * {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} to CANCEL.</p>
2592      * <p>Once PRECAPTURE completes, AE will transition to CONVERGED
2593      * or FLASH_REQUIRED as appropriate. This is a transient
2594      * state, the camera device may skip reporting this state in
2595      * capture result.</p>
2596      *
2597      * @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
2598      * @see CaptureResult#CONTROL_AE_STATE
2599      */
2600     public static final int CONTROL_AE_STATE_PRECAPTURE = 5;
2601 
2602     //
2603     // Enumeration values for CaptureResult#CONTROL_AF_STATE
2604     //
2605 
2606     /**
2607      * <p>AF is off or has not yet tried to scan/been asked
2608      * to scan.</p>
2609      * <p>When a camera device is opened, it starts in this
2610      * state. This is a transient state, the camera device may
2611      * skip reporting this state in capture
2612      * result.</p>
2613      * @see CaptureResult#CONTROL_AF_STATE
2614      */
2615     public static final int CONTROL_AF_STATE_INACTIVE = 0;
2616 
2617     /**
2618      * <p>AF is currently performing an AF scan initiated the
2619      * camera device in a continuous autofocus mode.</p>
2620      * <p>Only used by CONTINUOUS_* AF modes. This is a transient
2621      * state, the camera device may skip reporting this state in
2622      * capture result.</p>
2623      * @see CaptureResult#CONTROL_AF_STATE
2624      */
2625     public static final int CONTROL_AF_STATE_PASSIVE_SCAN = 1;
2626 
2627     /**
2628      * <p>AF currently believes it is in focus, but may
2629      * restart scanning at any time.</p>
2630      * <p>Only used by CONTINUOUS_* AF modes. This is a transient
2631      * state, the camera device may skip reporting this state in
2632      * capture result.</p>
2633      * @see CaptureResult#CONTROL_AF_STATE
2634      */
2635     public static final int CONTROL_AF_STATE_PASSIVE_FOCUSED = 2;
2636 
2637     /**
2638      * <p>AF is performing an AF scan because it was
2639      * triggered by AF trigger.</p>
2640      * <p>Only used by AUTO or MACRO AF modes. This is a transient
2641      * state, the camera device may skip reporting this state in
2642      * capture result.</p>
2643      * @see CaptureResult#CONTROL_AF_STATE
2644      */
2645     public static final int CONTROL_AF_STATE_ACTIVE_SCAN = 3;
2646 
2647     /**
2648      * <p>AF believes it is focused correctly and has locked
2649      * focus.</p>
2650      * <p>This state is reached only after an explicit START AF trigger has been
2651      * sent ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}), when good focus has been obtained.</p>
2652      * <p>The lens will remain stationary until the AF mode ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) is changed or
2653      * a new AF trigger is sent to the camera device ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}).</p>
2654      *
2655      * @see CaptureRequest#CONTROL_AF_MODE
2656      * @see CaptureRequest#CONTROL_AF_TRIGGER
2657      * @see CaptureResult#CONTROL_AF_STATE
2658      */
2659     public static final int CONTROL_AF_STATE_FOCUSED_LOCKED = 4;
2660 
2661     /**
2662      * <p>AF has failed to focus successfully and has locked
2663      * focus.</p>
2664      * <p>This state is reached only after an explicit START AF trigger has been
2665      * sent ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}), when good focus cannot be obtained.</p>
2666      * <p>The lens will remain stationary until the AF mode ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) is changed or
2667      * a new AF trigger is sent to the camera device ({@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}).</p>
2668      *
2669      * @see CaptureRequest#CONTROL_AF_MODE
2670      * @see CaptureRequest#CONTROL_AF_TRIGGER
2671      * @see CaptureResult#CONTROL_AF_STATE
2672      */
2673     public static final int CONTROL_AF_STATE_NOT_FOCUSED_LOCKED = 5;
2674 
2675     /**
2676      * <p>AF finished a passive scan without finding focus,
2677      * and may restart scanning at any time.</p>
2678      * <p>Only used by CONTINUOUS_* AF modes. This is a transient state, the camera
2679      * device may skip reporting this state in capture result.</p>
2680      * <p>LEGACY camera devices do not support this state. When a passive
2681      * scan has finished, it will always go to PASSIVE_FOCUSED.</p>
2682      * @see CaptureResult#CONTROL_AF_STATE
2683      */
2684     public static final int CONTROL_AF_STATE_PASSIVE_UNFOCUSED = 6;
2685 
2686     //
2687     // Enumeration values for CaptureResult#CONTROL_AWB_STATE
2688     //
2689 
2690     /**
2691      * <p>AWB is not in auto mode, or has not yet started metering.</p>
2692      * <p>When a camera device is opened, it starts in this
2693      * state. This is a transient state, the camera device may
2694      * skip reporting this state in capture
2695      * result.</p>
2696      * @see CaptureResult#CONTROL_AWB_STATE
2697      */
2698     public static final int CONTROL_AWB_STATE_INACTIVE = 0;
2699 
2700     /**
2701      * <p>AWB doesn't yet have a good set of control
2702      * values for the current scene.</p>
2703      * <p>This is a transient state, the camera device
2704      * may skip reporting this state in capture result.</p>
2705      * @see CaptureResult#CONTROL_AWB_STATE
2706      */
2707     public static final int CONTROL_AWB_STATE_SEARCHING = 1;
2708 
2709     /**
2710      * <p>AWB has a good set of control values for the
2711      * current scene.</p>
2712      * @see CaptureResult#CONTROL_AWB_STATE
2713      */
2714     public static final int CONTROL_AWB_STATE_CONVERGED = 2;
2715 
2716     /**
2717      * <p>AWB has been locked.</p>
2718      * @see CaptureResult#CONTROL_AWB_STATE
2719      */
2720     public static final int CONTROL_AWB_STATE_LOCKED = 3;
2721 
2722     //
2723     // Enumeration values for CaptureResult#FLASH_STATE
2724     //
2725 
2726     /**
2727      * <p>No flash on camera.</p>
2728      * @see CaptureResult#FLASH_STATE
2729      */
2730     public static final int FLASH_STATE_UNAVAILABLE = 0;
2731 
2732     /**
2733      * <p>Flash is charging and cannot be fired.</p>
2734      * @see CaptureResult#FLASH_STATE
2735      */
2736     public static final int FLASH_STATE_CHARGING = 1;
2737 
2738     /**
2739      * <p>Flash is ready to fire.</p>
2740      * @see CaptureResult#FLASH_STATE
2741      */
2742     public static final int FLASH_STATE_READY = 2;
2743 
2744     /**
2745      * <p>Flash fired for this capture.</p>
2746      * @see CaptureResult#FLASH_STATE
2747      */
2748     public static final int FLASH_STATE_FIRED = 3;
2749 
2750     /**
2751      * <p>Flash partially illuminated this frame.</p>
2752      * <p>This is usually due to the next or previous frame having
2753      * the flash fire, and the flash spilling into this capture
2754      * due to hardware limitations.</p>
2755      * @see CaptureResult#FLASH_STATE
2756      */
2757     public static final int FLASH_STATE_PARTIAL = 4;
2758 
2759     //
2760     // Enumeration values for CaptureResult#LENS_STATE
2761     //
2762 
2763     /**
2764      * <p>The lens parameters ({@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
2765      * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} and {@link CaptureRequest#LENS_APERTURE android.lens.aperture}) are not changing.</p>
2766      *
2767      * @see CaptureRequest#LENS_APERTURE
2768      * @see CaptureRequest#LENS_FILTER_DENSITY
2769      * @see CaptureRequest#LENS_FOCAL_LENGTH
2770      * @see CaptureRequest#LENS_FOCUS_DISTANCE
2771      * @see CaptureResult#LENS_STATE
2772      */
2773     public static final int LENS_STATE_STATIONARY = 0;
2774 
2775     /**
2776      * <p>One or several of the lens parameters
2777      * ({@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
2778      * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} or {@link CaptureRequest#LENS_APERTURE android.lens.aperture}) is
2779      * currently changing.</p>
2780      *
2781      * @see CaptureRequest#LENS_APERTURE
2782      * @see CaptureRequest#LENS_FILTER_DENSITY
2783      * @see CaptureRequest#LENS_FOCAL_LENGTH
2784      * @see CaptureRequest#LENS_FOCUS_DISTANCE
2785      * @see CaptureResult#LENS_STATE
2786      */
2787     public static final int LENS_STATE_MOVING = 1;
2788 
2789     //
2790     // Enumeration values for CaptureResult#STATISTICS_SCENE_FLICKER
2791     //
2792 
2793     /**
2794      * <p>The camera device does not detect any flickering illumination
2795      * in the current scene.</p>
2796      * @see CaptureResult#STATISTICS_SCENE_FLICKER
2797      */
2798     public static final int STATISTICS_SCENE_FLICKER_NONE = 0;
2799 
2800     /**
2801      * <p>The camera device detects illumination flickering at 50Hz
2802      * in the current scene.</p>
2803      * @see CaptureResult#STATISTICS_SCENE_FLICKER
2804      */
2805     public static final int STATISTICS_SCENE_FLICKER_50HZ = 1;
2806 
2807     /**
2808      * <p>The camera device detects illumination flickering at 60Hz
2809      * in the current scene.</p>
2810      * @see CaptureResult#STATISTICS_SCENE_FLICKER
2811      */
2812     public static final int STATISTICS_SCENE_FLICKER_60HZ = 2;
2813 
2814     //
2815     // Enumeration values for CaptureResult#SYNC_FRAME_NUMBER
2816     //
2817 
2818     /**
2819      * <p>The current result is not yet fully synchronized to any request.</p>
2820      * <p>Synchronization is in progress, and reading metadata from this
2821      * result may include a mix of data that have taken effect since the
2822      * last synchronization time.</p>
2823      * <p>In some future result, within {@link CameraCharacteristics#SYNC_MAX_LATENCY android.sync.maxLatency} frames,
2824      * this value will update to the actual frame number frame number
2825      * the result is guaranteed to be synchronized to (as long as the
2826      * request settings remain constant).</p>
2827      *
2828      * @see CameraCharacteristics#SYNC_MAX_LATENCY
2829      * @see CaptureResult#SYNC_FRAME_NUMBER
2830      * @hide
2831      */
2832     public static final int SYNC_FRAME_NUMBER_CONVERGING = -1;
2833 
2834     /**
2835      * <p>The current result's synchronization status is unknown.</p>
2836      * <p>The result may have already converged, or it may be in
2837      * progress.  Reading from this result may include some mix
2838      * of settings from past requests.</p>
2839      * <p>After a settings change, the new settings will eventually all
2840      * take effect for the output buffers and results. However, this
2841      * value will not change when that happens. Altering settings
2842      * rapidly may provide outcomes using mixes of settings from recent
2843      * requests.</p>
2844      * <p>This value is intended primarily for backwards compatibility with
2845      * the older camera implementations (for android.hardware.Camera).</p>
2846      * @see CaptureResult#SYNC_FRAME_NUMBER
2847      * @hide
2848      */
2849     public static final int SYNC_FRAME_NUMBER_UNKNOWN = -2;
2850 
2851     /*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
2852      * End generated code
2853      *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~O@*/
2854 
2855 }
2856